Re: Replacing sendmail with postfix

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



On 21/09/19 9:07 AM, Chris Adams wrote:
Once upon a time, Kenneth Porter <shiva@xxxxxxxxxxxxxxx> said:
Perfect. I think the only other significant customizations I have
are lines to use the MIMEDefang and OpenDKIM milters. When last I
looked into migrating, I recall that Postfix handled milters just
fine.

Milters work a little different under postfix IIRC... I haven't tried
them (which is a little sad, since I think I may have been the first
person to write a sendmail milter :) ).

Postfix has excellent milter support, it may not work exactly the same as they do in sendmail but they are designed to be fully compatible with sendmail milters. Also I believe that nowadays milters are written just as much to be support postfix as sendmail, if not moreso:

http://www.postfix.org/MILTER_README.html

Meanwhile, I'd considered replacing procmail with the Dovecot
delivery program to get access to Sieve filtering but didn't see how
to easily invoke SpamAssassin as I do now in /etc/procmailrc. Is
Procmail still the default delivery agent in RHEL8?

I would recommend dovecot lmtp over dovecot lda.

Postfix can use dovecot lmtp or procmail (I don't remember which is default).

Postfix can use just about any delivery agent. The default in postfix is to use its own local(8) and virtual(8) delivery agents. That said, these delivery agents are very limited in comparison to dovecot lmtp or procmail.

IIRC sieve may not provide external scripting for security reasons.

I'm pretty sure it does via managesieve.

I use spamassassin via amavisd-new, with messages going postfix ->
amavisd -> second postfix (all via SMTP).

This is a good setup, but you may find that you can eliminate the second postfix step there and go postfix -> amavisd-new -> dovecot lmtp. Unless you need additional processing specifically from postfix after amavisd-new, that is.


Peter
_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
https://lists.centos.org/mailman/listinfo/centos



[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]


  Powered by Linux