Hi,
I have been using postfix-policyd-spf-python
<https://packages.debian.org/trixie/postfix-policyd-spf-python> and
noticed today it spits out links to a dead domain in its errors and
doesn't appear to be actively maintained? This of course does SPF only
and not DKIM or DMARC.
The Postfix Add-on Software page <https://www.postfix.org/addon.html>
states "Note: Postfix already ships with SPF support, in the form of a
plug-in policy daemon. This is the preferred integration model, at least
until SPF is mandated by standards." which I believe is explained on
Postfix SMTP Access Policy Delegation
<https://www.postfix.org/SMTPD_POLICY_README.html> but also has to
reference the dead openspf.org site via web.archive.org and back to
python-postfix-policyd-spf
A lot of people seem to use either of these milters rspamd
<https://docs.rspamd.com/tutorials/integration/#using-rspamd-with-postfix-mta>
or opendkim <https://wiki.debian.org/opendkim> (which also relies on
postfix-policyd-spf-python for SPF)
What is the preferred SPF + DKIM (and/or opendkim) tool that integrates
best with Postfix? I don't need any complicated bayesian anti-spam
techniques yet, just basic SPF + DKIM (aka DMARC policy) enforcement.
I know there's loads of options but I'm after what people recommend,
like and find works best with Postfix. The SPF + DKIM + DMARC "preferred
integration model".
Kind Regards,
Matthew
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