Relaying mails for recipients which are not known
FoxholeCommander last edited by FoxholeCommander
I have setup a Kopano server like described in the Administration Manual. We are using Active Directory for user management and Postfix for mail delivery.
The Postfix configuration looks like:
virtual_mailbox_domains = example.com
virtual_mailbox_maps = ldap:/etc/postfix/ldap-users.cf
virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf, ldap:/etc/postfix/ldap-groups.cf, ldap:/etc/postfix/ldap-groups-expand.cf
virtual_transport = lmtp:127.0.0.1:2003
Now we have some users with the same domain(virtual_mailbox_domains) which are not maintained by Kopano but a other mail system on another place.
I want to to relay all mails to these users to a specific host. Does anybody know how to setup postfix for that purpose.
Hello @FoxholeCommander ,
such a configuration can be achieved with transport maps in Postfix (either queried from ldap/ad or with a static map). You basically have to map the external addresses to the external mailserver.
FoxholeCommander last edited by
what exactly did you set in your main.cf? Because its more than just a one line change.
Something like the following should do the trick for you:
transport_maps = hash:/etc/postfix/transportto you main.cf and create the file with the following content:
email@example.com smtp:[external.mx.de] firstname.lastname@example.org smtp:[external.mx.de]
With every modification of the transport file you have to call
FoxholeCommander last edited by
in my config it wasn`t that simple and the transport_maps parameter was just a part of the solution. Additionally I had to make a hash table in the config line virtual_mailbox_maps. So now it looks like:
virtual_mailbox_maps = ldap:/…, has:/…
mpraunegger last edited by
I’ve a similar problem: Many users are maintained by our local Kopano server, but as many users will be maintained by an external mailserver. I don’t know all of the external users, but all of my local users are listed in ldap.
How can I configure this?
My setup: the local Kopano server maintains three domains: example1.at, example2.at and example3.at … example3.at must be splited into local users (from ldap) and all other unknown users to external
Fortunately, the MX record for example3.at points to the external server, I use fetchmail to get the mails for my local users.
I removed example3.at from virtual_mailbox_domains in my postifx config, so every mail to an user *@example3.at will be delieverd to the external server. Is it possible to filter the local users?
virtual_mailbox_domains = example1.at, example2.at #,example3.at virtual_mailbox_maps = ldap:/etc/postfix/ldap-users.cf,hash:/etc/postfix/virtual/addresses virtual_alias_maps = ldap:/etc/postfix/ldap-aliases.cf,hash:/etc/postfix/virtual/addresses virtual_transport = lmtp:127.0.0.1:2003
transport_maps = ldap:/etc/postfix/ldap-transport.cf,hash:/etc/postfix/transport
This does not work: /etc/postfix/ldap-transport.cf
server_host = localhost search_base = ou=Users,dc=customerxyz,dc=local version = 3 scope = sub query_filter = (&(mail=%s)(kopanoAliases=%s)) result_attribute = mail result_format = kopano