|
The main advantage is being able to use very strict DNSBL (e.g. zen.spamhaus.org) and customers using dynamic IP's (normally blocked) can still send e-mail if they authenticated during SMTP.
I've had mixed success with Plesk 9. When it worked, it worked REALLY well and reduced the load on qmail-scanner/CPU as it has to deal with fewer messages. Got ART qmail-scanner/spamdyke running, although the qmail service was always shown as stopped under the Services management. After a while (usually overnight) e-mail stopped being delivered and qmail was shown as running again. Restarted xinetd (sometimes also needed to remove spamdyke entries from /etc/xinetd.d/smtp*) and mail delivery would continue. I guess that Plesk was restarting qmail service and breaking itself.
I tried a lot of different configuration settings, but have given up for now, I will investigate again once Plesk 9 is more mature.
|