dovecot - Mar 2008 - IPv6-enabled dovecot-1.1rc* does not accept IPv4-connections

Hi,

I'm having a really really strange problem. After upgrading from
1.1.beta13 to 1.1.rc2 (happened with rc1 as well IIRC) I can't connect
to the services using IPv4 anymore. dovecot happily binds to the IPv6
wildcard socket which should accept IPv4 connections as well.

root at vs02:~# netstat -lnp --tcp | grep dovecot
tcp6       0      0 :::993                  :::*                    LISTEN    
30758/dovecot
tcp6       0      0 :::995                  :::*                    LISTEN    
30758/dovecot
tcp6       0      0 :::110                  :::*                    LISTEN    
30758/dovecot
tcp6       0      0 :::143                  :::*                    LISTEN    
30758/dovecot
root at vs02:~# telnet ::1 110
Trying ::1...
Connected to ::1.
Escape character is '^]'.
+OK Dovecot ready.
quit
+OK Logging out
Connection closed by foreign host.
root at vs02:~# telnet 127.0.0.1 110
Trying 127.0.0.1...
telnet: Unable to connect to remote host: Connection refused
root at vs02:~# /sbin/stop dovecot
dovecot (stop) running, process 30758
dovecot (stop) pre-stop, (main) process 30758
dovecot (stop) stopping, process 30758
dovecot (stop) killed, process 30758
dovecot (stop) post-stop
dovecot (stop) waiting

# downgrading
root at vs02:~# dpkg -i dovecot_1.1.beta13-1_amd64.deb
dpkg - warning: downgrading dovecot from 1.1.rc2-1 to 1.1.beta13-1.
(Reading database ... 20504 files and directories currently installed.)
Preparing to replace dovecot 1.1.rc2-1 (using dovecot_1.1.beta13-1_amd64.deb)
...
Unpacking replacement dovecot ...
Setting up dovecot (1.1.beta13-1) ...
Installing new version of config file /etc/dovecot/dovecot-sql-example.conf ...
Installing new version of config file /etc/dovecot/dovecot-ldap-example.conf ...
Installing new version of config file /etc/dovecot/dovecot-example.conf ...
root at vs02:~# /sbin/start dovecot
dovecot (start) waiting
dovecot (start) starting
dovecot (start) pre-start, process 30816
dovecot (start) spawned, process 30818
dovecot (start) post-start, (main) process 30818
dovecot (start) running, process 30818
root at vs02:~# netstat -lnp --tcp | grep dovecot
tcp6       0      0 :::993                  :::*                    LISTEN    
30818/dovecot
tcp6       0      0 :::995                  :::*                    LISTEN    
30818/dovecot
tcp6       0      0 :::110                  :::*                    LISTEN    
30818/dovecot
tcp6       0      0 :::143                  :::*                    LISTEN    
30818/dovecot
root at vs02:~# telnet 127.0.0.1 110
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.
+OK Dovecot ready.
quit
+OK Logging out
Connection closed by foreign host.

I built the packages myself, both (beta13 and rc2) with the options

--without-passwd --without-passwd-file --without-shadow --without-pam
--without-gssapi --without-vpopmail --with-ldap --without-checkpassword
--without-nss --with-deliver --with-ioloop=epoll
--with-storages=maildir,raw --sysconfdir=/etc/dovecot

Anyone having an idea?

Thanks,
Bernhard

On Mar 8, 2008, at 1:51 PM, Bernhard Schmidt wrote:
> I'm having a really really strange problem. After upgrading from
> 1.1.beta13 to 1.1.rc2 (happened with rc1 as well IIRC) I can't connect
> to the services using IPv4 anymore. dovecot happily binds to the IPv6
> wildcard socket which should accept IPv4 connections as well.
Dovecot no longer binds to both IPv6 and IPv4 using the same socket to  
avoid those stupid ::ffff:1.2.3.4 mapped addresses. Use:

listen = [::], *

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Timo Sirainen <tss at iki.fi> wrote:
>> I'm having a really really strange problem. After upgrading from
>> 1.1.beta13 to 1.1.rc2 (happened with rc1 as well IIRC) I can't
connect
>> to the services using IPv4 anymore. dovecot happily binds to the IPv6
>> wildcard socket which should accept IPv4 connections as well.
> Dovecot no longer binds to both IPv6 and IPv4 using the same socket to  
> avoid those stupid ::ffff:1.2.3.4 mapped addresses. Use:
>
> listen = [::], *
Yes, found that two minutes after my post. Was about to formally recall
my report, but now I'm hitting another issue:

Mar  8 13:02:57 vs02 deliver((null)): User request from dovecot-auth
timed out
Mar  8 13:02:57 vs02 postfix/pipe[30987]: 560043830E:
to=<berni at vmail.mail.mucip.net>, orig_to=<berni at
birkenwald.de>,
relay=dovecot, delay=152, delays=4.4/87/0/60, dsn=4.3.0, status=deferred
(temporary failure)

I guess I missed something else, that used to work with beta13 as well.
Any hints?

Regards,
Bernhard