How to avoid getting strange records in the mail.warn file? I started to receive it after Debian upgrade from jessie to stretch and postfix upgrade from 2.11.3 to 3.1.8. It is generated once, just after the system reboot.
Despite the strange errors recorded in mail.warn file, it seems that postfix works fine. My current environment is the following: Debian 9 stretch Postfix 3.1.8 Dovecot 2.2.27 (c0f36b0) 10.1.23-MariaDB-9+deb9u1 errors in mail.warn: Mar 18 17:21:25 jessie postfix/proxymap[873]: warning: connect to mysql server localhost: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2 "No such file or directory") Mar 18 17:21:25 jessie postfix/cleanup[869]: warning: proxy:mysql:/etc/postfix/virtual_alias_maps.cf lookup error for "ad...@waw.homeip.net" Mar 18 17:21:25 jessie postfix/cleanup[869]: warning: 3A36445441: virtual_alias_maps map lookup problem for ad...@waw.homeip.net -- message not accepted, try again later Mar 18 17:21:27 jessie postfix/cleanup[869]: warning: proxy:mysql:/etc/postfix/virtual_alias_maps.cf lookup error for "ad...@waw.homeip.net" Mar 18 17:21:27 jessie postfix/cleanup[869]: warning: 4E5B845444: virtual_alias_maps map lookup problem for ad...@waw.homeip.net -- message not accepted, try again later Mar 18 17:21:27 jessie postfix/cleanup[869]: warning: proxy:mysql:/etc/postfix/virtual_alias_maps.cf lookup error for "ad...@waw.homeip.net" Mar 18 17:21:27 jessie postfix/cleanup[869]: warning: 4EF9E45444: virtual_alias_maps map lookup problem for ad...@waw.homeip.net -- message not accepted, try again later Mar 18 17:22:24 jessie postfix/cleanup[869]: warning: proxy:mysql:/etc/postfix/virtual_alias_maps.cf lookup error for "ad...@waw.homeip.net" Mar 18 17:22:24 jessie postfix/cleanup[869]: warning: 5D9C63FABD: virtual_alias_maps map lookup problem for ad...@waw.homeip.net -- message not accepted, try again later Mar 18 17:22:24 jessie postfix/cleanup[869]: warning: proxy:mysql:/etc/postfix/virtual_alias_maps.cf lookup error for "ad...@waw.homeip.net" Mar 18 17:22:24 jessie postfix/cleanup[869]: warning: 5E7733FABD: virtual_alias_maps map lookup problem for ad...@waw.homeip.net -- message not accepted, try again later -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Users-f2.html