kopano-gateway listen only on ipv6
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Hello everybody,
I want to migrate an Univention Corporate Server (UCS) with Zarafa to Kopano. For this I installed a fresh UCS with Kopano to check all functions. Web- and Deskapp are working. But I cannot connect via IMAP(S), because the kopano-gateway only listens on IPv6, not on IPv4 :-(.
:~# netstat -tulpen | grep -i kopano tcp 0 0 0.0.0.0:236 0.0.0.0:* LISTEN 0 807632 3337/kopano-server tcp 0 0 0.0.0.0:237 0.0.0.0:* LISTEN 0 807635 3337/kopano-server tcp6 0 0 :::110 :::* LISTEN 0 7996412 23468/kopano-gatewa tcp6 0 0 :::143 :::* LISTEN 0 8002562 23468/kopano-gatewa tcp6 0 0 :::8080 :::* LISTEN 0 15093 773/kopano-ical tcp6 0 0 :::2003 :::* LISTEN 0 16005 778/kopano-dagent tcp6 0 0 :::8443 :::* LISTEN 0 15113 773/kopano-ical tcp6 0 0 :::993 :::* LISTEN 0 8002565 23468/kopano-gatewa tcp6 0 0 :::995 :::* LISTEN 0 7996415 23468/kopano-gatewa
My UCS info:
:~# univention-app info UCS: 4.2-2 errata189 App Center compatibility: 4 Installed: dhcp-server=11.0.0 kopano-core=8.3.1.32 kopano-webapp=3.3.0.610 nagios=3.5 pkgdb=10 samba4=4.6 squid=3.4 z-push-kopano=2.3.7 Upgradable:
Where can I configure, that the ports on IPv4 are opened too?
Thanks
Ulf -
Hello @businesstux ,
for me the deamons are listed for ipv6 in netstat as well, but still react to ipv4 adresses:
root@ucs-3635 ~ $ nc 127.0.0.1 143 * OK [CAPABILITY IMAP4rev1 LITERAL+ STARTTLS AUTH=PLAIN] IMAP gateway ready ^C
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Hi Felix,
you’re so right. From the Windows client per telnet I’ve got the same output like you. Then I have to search, why my Thunderbird won’t connect.
Thanks
Ulf -
IPv6 sockets generally also allow IPv4 connections transparently unless explicitly deactivated by something like IPV6_V6ONLY setsockopt.