Re: [CentOS] Replacing sendmail with postfix (was: deprecations leading up to C8)

[Chris Adams]

Once upon a time, Kenneth Porter  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 :) ).

> 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?

Postfix can use lmtp or procmail (I don't remember which is default).
IIRC sieve may not provide external scripting for security reasons.

I use spamassassin via amavisd-new, with messages going postfix ->
amavisd -> second postfix (all via SMTP).  It's more complicated, and
not really necessary for the small setup (but I run larger mail servers
with that setup, so I do the same for my personal servers as well).
-- 
Chris Adams 
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Re: [CentOS] Replacing sendmail with postfix (was: deprecations leading up to C8)

[Kenneth Porter]

--On Friday, September 20, 2019 2:06 PM -0500 Chris Adams 
 wrote:



How would you implement the section here titled "Sendmail
workaround" using Postfix?


http://www.postfix.org/postconf.5.html#recipient_delimiter


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.


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?




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Re: [CentOS] Replacing sendmail with postfix (was: deprecations leading up to C8)

[Chris Adams]

Once upon a time, Kenneth Porter  said:
> How would you implement the section here titled "Sendmail
> workaround" using Postfix?

http://www.postfix.org/postconf.5.html#recipient_delimiter

-- 
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Re: [CentOS] Replacing sendmail with postfix (was: deprecations leading up to C8)

[Kenneth Porter]

--On Friday, September 20, 2019 3:49 PM +0200 Alexander Dalloz 
 wrote:



Postfix has a lot of features build-in Sendmail hasn't. It is feature
rich and actively developed. Many things you would need a milter or
complex cf style coding for with Sendmail you can configure in Postfix in
a simple way.


How would you implement the section here titled "Sendmail workaround" using 
Postfix? I use a lot of plussed addresses with the plus replaced with dot 
to deal with broken websites that reject a plus sign in an address. All my 
website logins use plussed addresses with dots. (I also use an email alias 
so my email address isn't my imap login.)




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