The OP in this thread isn't me, but I'm having the same issue (except that I'm not using spamdyke):
http://forum.swsoft.com/showthread.php?t=56858

In that thread, someone helps to narrow the problem down to /var/qmail/bin/tcp-env.

In another thread a solution is posted: http://forum.swsoft.com/showthread.php?t=57067
Which says:

Quote :

"Replacing /var/qmail/bin/tcp-env with a known working copy from a Plesk 8.6 server resolves the issue."

GoDaddy was no help with suggestions or providing me with a copy of tcp-env. (not really surprised).

Does anyone have any suggestions, or at least a copy of this from plesk8.x?

TIA

12/19/2008 10:21:56 PM

i dunno wtf plesk is, but if you want a working copy of qmail you could always try the qmail website.

Or just man up and switch to a real MTA like sendmail.

12/19/2008 10:47:04 PM

The best solution is to get rid of plesk.

12/20/2008 12:04:43 AM

yeah, plesk is the shittiest control panel known to man

12/20/2008 12:17:41 AM

Update: I was able to download plesk's qmail rpm from here: http://autoinstall.plesk.com and using 7-zip, extract the tcp-env and replace on the server to fix the issue.

12/20/2008 11:58:21 PM