Atomicorp

I upgraded from Plesk 8.6 to 9.3 a few weeks ago (via ART repository).

I automatically got switched to Postfix (which I would think is a *good* thing?).

However I get "queue file write error" messages and problems in the logs. And I see BIG online discussions at Plesk forums for both 9.2 and 9.3 with this and that patch alluded to (which doesn't seem to work). e.g. http://forum.parallels.com/showthread.php?t=98156

I see Postfix error messages on the lines of "Postfix SMTP server: errors from unknown[8x.14x.23x.xxx]". When I look in the logs I see this kind of thing:

Mar 11 04:43:30 my-mail-server before-remote[25025]: check handlers for addr: xyz@hotmail.co.uk
Mar 11 04:43:30 my-mail-server before-remote[25025]: check handlers for addr: clare@xyz.co.uk
Mar 11 04:43:30 my-mail-server before-remote[25025]: Unprocessed command: >
Mar 11 04:43:30 my-mail-server before-remote[25025]: errno: Broken pipe
Mar 11 04:43:30 my-mail-server before-remote[25025]: System error: Broken pipe
Mar 11 04:43:30 my-mail-server before-remote[25025]: Unable to write data into incoming socket
Mar 11 04:43:30 my-mail-server before-remote[25025]: Unable to translate command answer: > >>> Bye for now=2C love Ann xx

I haven't installed the Plesk patch as it seems that doesn't work (and may cause other problems)

Anyone else here got this? Any ideas anyone?

Or should I go back to Qmail?

Supposedly Postfix is fixed in 9.5 but it wasn't touched in 9.3. The reason you got switched is that the packages see each other as upgrading the other. If you do a check-update you'll notice your qmail packages are set to "upgrade" back over Postfix.

To fix this, go into your plesk.repo file (typically in /etc/yum.repos.d) and add That will prevent Postfix from ever "upgrading" over qmail again. If you make the leap to Postfix for good, change it to qc instead of pc

Many thanks.

So go back to Qmail and wait till the Plesk folks get Postfix solved?

I found this in my repo:

# Plesk RPM bug. Default is to assume postfix
exclude=psa-mail-qc-driver*
#exclude=psa-mail-pc-driver*

When I change that around to exclude the qc driver, I'm afraid nothing happens when I run yum check-update (I have also run "clean all" and "clean metadata"). Can you suggest something?

(Also, would you say switching back is likely to be reliable? Or could I find myself digging deeper into a hole?!)

I guess the new Plesk installer has that in there by default.

I would switch back. It's pretty painless (except for reconfiguring the qmail-scanner).

Once again - thanks for your help Highland.

I'll give this a go over the weekend.