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    Spooler unable to connect to SMTP

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    • Miyamoto72
      Miyamoto72 last edited by

      Hi,
      I’m trying to get Kopano up and running on my freshly setup Debian Buster box with packages from the Debian repos. But somehow I can’t send out mail - kopano-spooler is unable to connect to postfix on the same machine.

      Installation went without problems via apt, WebApp can be loaded and used for composing mails, but upon hitting the send button the mails stays in the outbox.

      excerpt from /var/log/kopano/spooler.log:

      Wed Dec 11 20:40:47 2019: [=======] Starting kopano-spooler version 8.7.0 (pid 19665 uid 109)
Wed Dec 11 20:40:47 2019: [info   ] Coredump status left at system default.
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Kopano Directory Service"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Private Folders"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Public Folders"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Kopano Directory Service"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Private Folders"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Initializing provider "Public Folders"
Wed Dec 11 20:40:47 2019: [debug  ] [19665] PYTHONPATH = /usr/share/kopano-spooler/python
Wed Dec 11 20:40:47 2019: [info   ] [19665] * Loading plugins started
Wed Dec 11 20:40:47 2019: [info   ] [19665] ** Checking plugins in /var/lib/kopano/spooler/plugins
Wed Dec 11 20:40:47 2019: [info   ] [19665] * Loading plugins done
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Sending e-mail for user $USER, subject: "FW: Undelivered Mail Returned to Sender", si
ze: 5831
Wed Dec 11 20:40:47 2019: [info   ] [19665] * PreSending processing started
Wed Dec 11 20:40:47 2019: [info   ] [19665] * PreSending processing done
Wed Dec 11 20:40:47 2019: [debug  ] [19665] Sending message with Message-ID: kcis.B50889D7B3094618A0119FBB1CBCA921@mail.fritz.box
Wed Dec 11 20:40:47 2019: [debug  ] [19665] RCPT TO: user@host
Wed Dec 11 20:40:47 2019: [debug  ] [19665] SMTP connecting to localhost:25
Wed Dec 11 20:40:47 2019: [debug  ] [19665] SMTP server connected.
Wed Dec 11 20:40:49 2019: [debug  ] [19625] Initializing provider "Kopano Directory Service"
Wed Dec 11 20:40:49 2019: [debug  ] [19625] Initializing provider "Private Folders"
Wed Dec 11 20:40:50 2019: [debug  ] [19625] Initializing provider "Public Folders"
Wed Dec 11 20:40:50 2019: [info   ] [19625] Connection to storage server succeeded after 1 retries
Wed Dec 11 20:40:50 2019: [debug  ] [19625] Number of messages in the queue: 1
Wed Dec 11 20:40:50 2019: [debug  ] [19625] Messages with delayed delivery: 0
Wed Dec 11 20:41:50 2019: [debug  ] [19625] Number of messages in the queue: 1
Wed Dec 11 20:41:50 2019: [debug  ] [19625] Messages with delayed delivery: 0
Wed Dec 11 20:42:50 2019: [debug  ] [19625] Number of messages in the queue: 1
Wed Dec 11 20:42:50 2019: [debug  ] [19625] Messages with delayed delivery: 0
Wed Dec 11 20:43:50 2019: [debug  ] [19625] Number of messages in the queue: 1
Wed Dec 11 20:43:50 2019: [debug  ] [19625] Messages with delayed delivery: 0
Wed Dec 11 20:44:50 2019: [debug  ] [19625] Number of messages in the queue: 1
Wed Dec 11 20:44:50 2019: [debug  ] [19625] Messages with delayed delivery: 0
Wed Dec 11 20:45:05 2019: [error  ] [19630] Connect to SMTP: Operation timed out.. E-Mail will be tried again later.
Wed Dec 11 20:45:05 2019: [debug  ] [19630] < QUIT

      This is being repeated. The server.log doesn’t contain anything at the same time.

      /etc/postfix/main.cf:

      #Kopano Custom
virtual_alias_maps = hash:/etc/postfix/aliases                  # Aliase/Weiterleitungen für Postfächer
virtual_mailbox_maps = mysql:/etc/postfix/mysql-users.cf        # Auslesen vorhandener Postfächer
virtual_transport = lmtp:127.0.0.1:2003                         # Weiterleiten der Mail an Dagent für die Zustellung an das Postfach
virtual_mailbox_domains = $FQDN                          # Berechtigte Empfangs-Domains```

/etc/postfix/mysql-users.cf:

      user = kopano
      password = GEHEIM
      hosts = 127.0.0.1
      dbname = kopanoserver
      query = SELECT value FROM objectproperty where propname = ‘emailaddress’ and value = ‘%s’;```

      MySQL table can be read with the credentials above.

      I’m a bit lost right now and don’t know where to look and how to fix.
      Maybe someone sees what I’m missing?

      Any other info needed in order to help? Please tell me.

      1 Reply Last reply Reply Quote 0
      • jengelh
        jengelh Banned last edited by

        Firewall?
        runuser -u kopano -- telnet ::1 25

        jengelh 1 Reply Last reply Reply Quote 0
        • Miyamoto72
          Miyamoto72 last edited by Miyamoto72

          the runuser command you gave didn’t succeed - the telnet session is never established.
          Scanning the server from the LAN yields the following:

          PORT     STATE    SERVICE
22/tcp   open     ssh
25/tcp   filtered smtp
80/tcp   open     http
110/tcp  open     pop3
143/tcp  open     imap
443/tcp  open     https
465/tcp  open     smtps
587/tcp  open     submission
2003/tcp open     finger
8080/tcp open     http-proxy
9090/tcp open     zeus-admin

          Port 9090 is used by cockpit.

          netstat -tulpen | grep 25

          on the server shows this:

          tcp        3      0 0.0.0.0:587             0.0.0.0:*               LISTEN      0          155156     25893/master        
tcp        3      0 0.0.0.0:465             0.0.0.0:*               LISTEN      0          155162     25893/master        
tcp      101      0 0.0.0.0:25              0.0.0.0:*               LISTEN      0          155150     25893/master        
tcp6       0      0 :::587                  :::*                    LISTEN      0          155157     25893/master        
tcp6       0      0 :::465                  :::*                    LISTEN      0          155163     25893/master        
tcp6     101      0 :::25                   :::*                    LISTEN      0          155151     25893/master

          The PID is a child of ‘service postfix@- start’

          ● postfix@-.service - Postfix Mail Transport Agent (instance -)
   Loaded: loaded (/lib/systemd/system/postfix@.service; enabled-runtime; vendor preset: enabled)
   Active: active (running) since Tue 2019-12-10 21:59:52 CET; 5 days ago
     Docs: man:postfix(1)
    Tasks: 4 (limit: 4915)
   Memory: 17.4M
   CGroup: /system.slice/system-postfix.slice/postfix@-.service
           ├─ 3035 pickup -l -t unix -u -c
           ├─ 5095 proxymap -t unix -u
           ├─25893 /usr/lib/postfix/sbin/master -w
           └─25895 qmgr -l -t unix -u

          The log excerpt from ‘service postfix@- status’ reads:

          Dez 16 16:24:38 mail postfix/smtps/smtpd[5295]: fatal: open dictionary: expecting "type:name" form instead of "#"
Dez 16 16:24:38 mail postfix/submission/smtpd[5294]: fatal: open dictionary: expecting "type:name" form instead of "#"
Dez 16 16:24:39 mail postfix/master[25893]: warning: process /usr/lib/postfix/sbin/cleanup pid 5292 exit status 1
Dez 16 16:24:39 mail postfix/master[25893]: warning: /usr/lib/postfix/sbin/cleanup: bad command startup -- throttling
Dez 16 16:24:39 mail postfix/master[25893]: warning: process /usr/lib/postfix/sbin/smtpd pid 5293 exit status 1
Dez 16 16:24:39 mail postfix/master[25893]: warning: /usr/lib/postfix/sbin/smtpd: bad command startup -- throttling
Dez 16 16:24:39 mail postfix/master[25893]: warning: process /usr/lib/postfix/sbin/smtpd pid 5295 exit status 1
Dez 16 16:24:39 mail postfix/master[25893]: warning: /usr/lib/postfix/sbin/smtpd: bad command startup -- throttling
Dez 16 16:24:39 mail postfix/master[25893]: warning: process /usr/lib/postfix/sbin/smtpd pid 5294 exit status 1
Dez 16 16:24:39 mail postfix/master[25893]: warning: /usr/lib/postfix/sbin/smtpd: bad command startup -- throttling

          Any ideas?

          1 Reply Last reply Reply Quote 0
          • Miyamoto72
            Miyamoto72 last edited by

            Oh, and according to the output ‘iptables -L’ I think the firewall is not to blame:

            Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy DROP)
target     prot opt source               destination         
DOCKER-USER  all  --  anywhere             anywhere            
DOCKER-ISOLATION-STAGE-1  all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere             ctstate RELATED,ESTABLISHED
DOCKER     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain DOCKER (1 references)
target     prot opt source               destination         
ACCEPT     tcp  --  anywhere             172.17.0.2           tcp dpt:9980

Chain DOCKER-ISOLATION-STAGE-1 (1 references)
target     prot opt source               destination         
DOCKER-ISOLATION-STAGE-2  all  --  anywhere             anywhere            
RETURN     all  --  anywhere             anywhere            

Chain DOCKER-ISOLATION-STAGE-2 (1 references)
target     prot opt source               destination         
DROP       all  --  anywhere             anywhere            
RETURN     all  --  anywhere             anywhere            

Chain DOCKER-USER (1 references)
target     prot opt source               destination         
RETURN     all  --  anywhere             anywhere
            1 Reply Last reply Reply Quote 0
            • jengelh
              jengelh Banned @jengelh last edited by

              @Miyamoto72 said in Spooler unable to connect to SMTP:

              the runuser command you gave didn’t succeed - the telnet session is never established.
              Scanning the server from the LAN yields the following:

              PORT     STATE    SERVICE
22/tcp   open     ssh
25/tcp   filtered smtp
80/tcp   open     http
110/tcp  open     pop3
143/tcp  open     imap
443/tcp  open     https
465/tcp  open     smtps
587/tcp  open     submission
2003/tcp open     finger
8080/tcp open     http-proxy
9090/tcp open     zeus-admin

              So there is your answer. if neither telnet nor nmap can connect, how could kopano …

              1 Reply Last reply Reply Quote 0
              • Miyamoto72
                Miyamoto72 last edited by

                Yeah, right - but what’s the problem here, how can I solve it?

                1 Reply Last reply Reply Quote 0
                • A Former User
                  A Former User last edited by

                  Disable the firewall and test.

                  Miyamoto72 1 Reply Last reply Reply Quote 0
                  • thctlo
                    thctlo last edited by thctlo

                    @Miyamoto72 said in Spooler unable to connect to SMTP:

                    fatal: open dictionary: expecting “type:name” form instead of “#”

                    This looks like a config error, post the master.cf and main.cf
                    This has nothing todo with kopano.

                    Your postfix mappings are not correct.

                    Dez 16 16:24:38 mail postfix/smtps/smtpd[5295]: fatal: open dictionary: expecting "type:name" form instead of "#"
Dez 16 16:24:38 mail postfix/submission/smtpd[5294]: fatal: open dictionary: expecting "type:name" form instead of "#"

                    And this clearly shows it, due too these above errors postfix not starting fully.

                    I suggest, compair your settings with these, to give you the idea whats wrong.

                    ### virtual alias mailbox transport
virtual_alias_maps =
    mysql:/etc/postfix/mysql/mysql-users.cf,
    hash:/etc/postfix/virtual-kopano.map, 
virtual_mailbox_maps = mysql:/etc/postfix/mysql/mysql-users.cf
virtual_mailbox_domains = mysql:/etc/postfix/mysql/mysql-domains.cf
virtual_transport = lmtp:127.0.0.1:2003

                    And you want to see this when you check postfix.

                    sudo systemctl status postfix
● postfix.service - Postfix Mail Transport Agent
   Loaded: loaded (/lib/systemd/system/postfix.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/postfix.service.d
           └─override.conf
   Active: active (exited) since Fri 2019-11-22 11:21:30 CET; 3 weeks 3 days ago
 Main PID: 1183 (code=exited, status=0/SUCCESS)
    Tasks: 0 (limit: 4915)
   Memory: 0B
   CGroup: /system.slice/postfix.service
                    1 Reply Last reply Reply Quote 0
                    • Miyamoto72
                      Miyamoto72 @Guest last edited by

                      @WalterHof said in Spooler unable to connect to SMTP:

                      Disable the firewall and test.

                      There’s no firewall enabled. Except for docker rules iptables are empty AFAIUI

                      1 Reply Last reply Reply Quote 0
                      • Miyamoto72
                        Miyamoto72 last edited by Miyamoto72

                        master.cf:

                        #
# Postfix master process configuration file.  For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type  private unpriv  chroot  wakeup  maxproc command + args
#               (yes)   (yes)   (no)    (never) (100)
# ==========================================================================
smtp      inet  n       -       y       -       -       smtpd
#smtp      inet  n       -       y       -       1       postscreen
#smtpd     pass  -       -       y       -       -       smtpd
#dnsblog   unix  -       -       y       -       0       dnsblog
#tlsproxy  unix  -       -       y       -       0       tlsproxy
submission inet n       -       y       -       -       smtpd
  -o syslog_name=postfix/submission
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_tls_auth_only=yes
  -o smtpd_reject_unlisted_recipient=no
#  -o smtpd_client_restrictions=$mua_client_restrictions
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
  -o smtpd_recipient_restrictions=
  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
  -o milter_macro_daemon_name=ORIGINATING
smtps     inet  n       -       y       -       -       smtpd
  -o syslog_name=postfix/smtps
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes
#  -o smtpd_reject_unlisted_recipient=no
#  -o smtpd_client_restrictions=$mua_client_restrictions
#  -o smtpd_helo_restrictions=$mua_helo_restrictions
#  -o smtpd_sender_restrictions=$mua_sender_restrictions
#  -o smtpd_recipient_restrictions=
#  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
#  -o milter_macro_daemon_name=ORIGINATING
#628       inet  n       -       y       -       -       qmqpd
pickup    unix  n       -       y       60      1       pickup
cleanup   unix  n       -       y       -       0       cleanup
qmgr      unix  n       -       n       300     1       qmgr
#qmgr     unix  n       -       n       300     1       oqmgr
tlsmgr    unix  -       -       y       1000?   1       tlsmgr
rewrite   unix  -       -       y       -       -       trivial-rewrite
bounce    unix  -       -       y       -       0       bounce
defer     unix  -       -       y       -       0       bounce
trace     unix  -       -       y       -       0       bounce
verify    unix  -       -       y       -       1       verify
flush     unix  n       -       y       1000?   0       flush
proxymap  unix  -       -       n       -       -       proxymap
proxywrite unix -       -       n       -       1       proxymap
smtp      unix  -       -       y       -       -       smtp
relay     unix  -       -       y       -       -       smtp
        -o syslog_name=postfix/$service_name
#       -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq     unix  n       -       y       -       -       showq
error     unix  -       -       y       -       -       error
retry     unix  -       -       y       -       -       error
discard   unix  -       -       y       -       -       discard
local     unix  -       n       n       -       -       local
virtual   unix  -       n       n       -       -       virtual
lmtp      unix  -       -       y       -       -       lmtp
anvil     unix  -       -       y       -       1       anvil
scache    unix  -       -       y       -       1       scache
postlog   unix-dgram n  -       n       -       1       postlogd
#
# ====================================================================
# Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent.  See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop  unix  -       n       n       -       -       pipe
  flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
#   lmtp    cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
#  mailbox_transport = lmtp:inet:localhost
#  virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus     unix  -       n       n       -       -       pipe
#  user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix  -       n       n       -       -       pipe
#  flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp      unix  -       n       n       -       -       pipe
  flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail    unix  -       n       n       -       -       pipe
  flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp     unix  -       n       n       -       -       pipe
  flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix	-	n	n	-	2	pipe
  flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman   unix  -       n       n       -       -       pipe
  flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
  ${nexthop} ${user}

                        main.cf:

                        # See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

readme_directory = no

# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2



# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
smtpd_tls_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtp_tls_security_level = verify
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtpd_tls_security_level = may
smtpd_tls_auth_only = yes
smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_protocols=!SSLv2,!SSLv3,!TLSv1,!TLSv1.1
smtpd_tls_mandatory_ciphers = medium
tls_medium_cipherlist = AES128+EECDH:AES128+EDH

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.fritz.box
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mail.example.com, $myhostname, mail.fritz.box, localhost.fritz.box, localhost

# relay mails via hosted.mailcow.de
relayhost = [hosted.mailcow.de]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/relay
smtp_sasl_security_options = noanonymous

mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all

### RSpamD
#
# include rspamd via milter
smtpd_milters = unix:/var/lib/rspamd/milter.sock
# or for TCP socket
#smtpd_milters = inet:localhost:11332

# rspamd: skip mail without checks if something goes wrong
milter_default_action = accept

#Kopano Custom
virtual_alias_maps = hash:/etc/postfix/aliases 			# Aliase/Weiterleitungen für Postfächer
virtual_mailbox_maps = mysql:/etc/postfix/mysql-users.cf 	# Auslesen vorhandener Postfächer
virtual_transport = lmtp:127.0.0.1:2003 			# Weiterleiten der Mail an Dagent für die Zustellung an das Postfach
virtual_mailbox_domains = example.org 				# Berechtigte Empfangs-Domains

smtpd_recipient_restrictions = permit_mynetworks,reject_non_fqdn_recipient,reject_non_fqdn_hostname,reject_invalid_hostname,reject_non_fqdn_recipient,reject_non_fqdn_sender,reject_unauth_pipelining,reject_unverified_recipient

                        As far as I can see the kopano map you mentioned in your post is not in main.cf - but it doesn’t exist at all either. And virtual_mailbox_domains is given directly, not via a hashed table.

                        I know, main.cf is to be optimized in regards of crypto. But first I have to get stuff up and running.

                        For those who speak master.cf and main.cf fluently - any obvious error that could be fixed easily?

                        1 Reply Last reply Reply Quote 0
                        • thctlo
                          thctlo last edited by

                          alias_maps = hash:/etc/aliases and virtual_alias_maps = hash:/etc/postfix/aliases

                          The format (content) of these to “alias” files are different, thats all.
                          I’m betting you copied the alias file, only the format in alias is diffent …
                          per example, from : http://www.postfix.org/VIRTUAL_README.html

                          /etc/postfix/virtual:
    listname-request@example.com listname-request
    listname@example.com         listname
    owner-listname@example.com   owner-listname

/etc/aliases:
    listname: "|/some/where/majordomo/wrapper ..."
    owner-listname: ...
    listname-request: ...

                          And i also recommend to rename the file to virtual-kopano

                          1 Reply Last reply Reply Quote 0
                          • Miyamoto72
                            Miyamoto72 last edited by

                            I’m sorry, you lost your bet ;-) - /etc/postfix/aliases actually is an empty file (that I postmapped, of course)

                            But thanks for clearing up the different formats and the suggestion to rename /etc/postfix/aliases to a kopano-related name.

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