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Fetchmail in combination with haproxy #1841

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Fetchmail in combination with haproxy#1841
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@DerOetzi

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@DerOetzi
DerOetzi
opened on Mar 2, 2021

Subject

I would like some feedback concerning a use case

Description

I having a docker-mailserver running behind a haproxy as load-balancer. For this I added the following configurations to postfix-main.cf and postfix-master.cf

postfix-main.cf

postscreen_upstream_proxy_protocol = haproxy

postfix-master.cf

smtps/inet/smtpd_upstream_proxy_protocol=haproxy
submission/inet/smtpd_upstream_proxy_protocol=haproxy

Unfortunately this seems to break fetchmail daemon:

mailserver      | Mar  2 13:20:02 b38fd20b0009 fetchmail[1109]: reading message [email protected]:1 of 3 (28757 octets)Trying to connect to 127.0.0.1/25...connected.
mailserver      | Mar  2 13:20:07 b38fd20b0009 postfix/postscreen[11248]: warning: haproxy read: time limit exceeded
mailserver      | Mar  2 13:20:07 b38fd20b0009 fetchmail[1109]: SMTP< 421 4.3.2 No system resources
mailserver      | Mar  2 13:20:07 b38fd20b0009 fetchmail[1109]: Trying to connect to 127.0.0.1/25...connected.
mailserver      | Mar  2 13:20:12 b38fd20b0009 postfix/postscreen[11248]: warning: haproxy read: time limit exceeded
mailserver      | Mar  2 13:20:12 b38fd20b0009 fetchmail[1109]: SMTP< 421 4.3.2 No system resources
mailserver      | Mar  2 13:20:12 b38fd20b0009 fetchmail[1109]: SMTP connect to localhost failed

Maybe someone knows a solution howto fix this.

Thanks

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