Greetings, Noah Huppert! > I have a Postfix send only server setup.
> I am attempting to integrate OpenDKIM to mitigate the possibility of being > blacklisted. > Whenever I send a message I see the following warning in the syslog: >> postfix/cleanup[19960]: warning: milter inet:localhost:12301: can't read >> SMFIC_EOH reply packet header: Invalid argument > Messages are still sent by Postfix, however the emails do not appear to > have any DKIM related headers in them. I suspect that the warning above > indicates that OpenDKIM is not communicating with Postfix correctly and as a > result messages are not being signed. > I setup Postfix to use OpenDKIM in the Postfix main.cf file: >> milter_protocol = 2 Only explicitly define such things, when you absolutely know you need them. >> milter_default_action = accept >> smtpd_milters = inet:localhost:12301 >> non_smtpd_milters = inet:localhost:12301 inet:[localhost]:… Save a roundtrip to DNS server for MX lookup. It's not needed, nor going to be successful here. > The output of postconf -n and postconf -Mf are in this GitHub Gist: > https://gist.github.com/Noah-Huppert/0e8160dd6a12e0c62292d1c3f5a262b8 > This Gist also contains what I believe to be the relevant OpenDKIM > configuration. > My efforts to debug this issue have mainly been centered around figuring > out what the SMFIC_EOH error code means. However I have had no luck. Any > help figuring out what this error code means or how to fix this issue would > be greatly appreciated. > Best, > Noah Huppert -- With best regards, Andrey Repin Wednesday, February 13, 2019 17:46:16 Sorry for my terrible english...