Issue with LMTP proxying and port number
Stephan Bosch
stephan at rename-it.nl
Sun Jan 6 18:00:38 EET 2019
Op 06/01/2019 om 11:50 schreef Stephan Bosch:
>
> Op 31/12/2018 om 23:59 schreef Steven Craig:
>> Hello there,
>>
>> Everything was working fine on Dovecot 2.2.10 (on CentOS 7), but
>> after updating to version 2.2.36, our director servers are not able
>> to proxy LMTP.
>>
>> We are sending mail from exim to the local Dovecot LMTP socket, which
>> then used to send it to our internal mail servers on port 24.
>>
>> Besides the update, nothing has changed in the config files. The
>> configuration has been working great for months … Then we had a great
>> idea of doing holiday maintenance.
>>
>> (Currently, we are working around this issue by having exim send mail
>> to the IP and port, instead of the socket.)
>>
>> Doing a tcpdump capture shows no TCP traffic either. The logs seem
>> to say that it is trying to go to port 0, so my guess is that it’s
>> not getting the port directive from either static or sql — since the
>> docs state that if these settings aren't specified, it will always
>> use the same connection type for the proxy that it received the
>> connection on.
>>
>> Any thoughts? I can share config if necessary.
>
> Yes, output from `dovecot -n` could be helpful.
>
> Also a literal dump of those errors in the log could help.
Never mind, I can reproduce it here, even with master.
We'll get back to you.
Regards,
Stephan.
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