I'm trying to clarify the various ways in which I could set up Postfix + Dovecot + SpamAssassin under CentOS-7, and I'd welcome any comments on the following remarks.
As far as I can see there are 3 standard ways of setting this up: 1. Use amavisd 2. Use dovecot + pigeonhole/sieve 3. Use spamass-milter
At present I'm following (2), but am thinking of going over to (1), since this seems simpler. (Amavisd wasn't available when I set up CentOS-7, so I didn't consider it then.)
It seems to me that (2) is using dovecot in a slightly odd way, since as far as I can see dovecot normally takes email from ~/Maildir/cur/ and then moves marked spam.
I'm not quite sure if (3) is a genuine alternative, or if it is why it is not the standard since it seems very simple?
On 08/25/2014 03:52 PM, Timothy Murphy wrote:
I'm trying to clarify the various ways in which I could set up Postfix + Dovecot + SpamAssassin under CentOS-7, and I'd welcome any comments on the following remarks.
As far as I can see there are 3 standard ways of setting this up:
- Use amavisd
- Use dovecot + pigeonhole/sieve
- Use spamass-milter
I'm not quite sure if (3) is a genuine alternative, or if it is why it is not the standard since it seems very simple?
I'm on CentOS 6 (well, actually Amazon AMI which is sort of somewhere in between CentOS 6 and CentOS 7) and I find (3) to be the easiest option:
1) From EPEL, install "spamass-milter" and "spamass-milter-postfix" RPMs
2) Modify /etc/sysconfig/spamass-milter to uncomment "EXTRA_FLAGS" and adjust spam threshold to your liking
3) Add following line to /etc/postfix/main.cf:
smtpd_milters = unix:/var/run/spamass-milter/postfix/sock
4) Make sure spamass-milter, postfix, etc. are running and set to start at boot, using chkconfig, service, and/or systemctl as appropriate.
-Greg
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Greg Bailey -
Timothy Murphy