Mail server not accepting mail from Howtoforge.com

[Daniel15]

Hi,
My mail server (a RHEL system running cPanel) doesn't accept mail from HowtoForge.com. Looking at the Exim log, I saw this (@ replaced with -[at]-):

2006-11-21 04:17:35 H=h7252.serverkompetenz.net (mh1.hostmu.com) [81.169.182.36]:48105 I=[75.126.41.160]:25 sender verify defer for <www-data-[at]-server1.howtoforge.com>: could not connect to server1.howtoforge.com [85.10.207.148]: Connection timed out
2006-11-21 04:17:35 H=h7252.serverkompetenz.net (mh1.hostmu.com) [81.169.182.36]:48105 I=[75.126.41.160]:25 F=<www-data-[at]-server1.howtoforge.com> temporarily rejected RCPT <daniel15-[at]-daniel15.com>: Could not complete sender verify callout
2006-11-21 04:17:36 H=h7252.serverkompetenz.net (mh1.hostmu.com) [81.169.182.36]:48105 I=[75.126.41.160]:25 incomplete transaction (RSET) from <www-data-[at]-server1.howtoforge.com>

It appears that your server isn't accepting the sender verify callout, and hence my server is blocking it. I needed to turn off sender verification in order to get the confirmation email for this forum.

[falko]

It appears that your server isn't accepting the sender verify callout, and hence my server is blocking it. I needed to turn off sender verification in order to get the confirmation email for this forum.
Port 25 is blocked on server1.howtoforge.com for security reasons, and the server is relaying through another server to send emails.