Per Drexel IRT … this issue is now resolved. WOOt Drexel!

Just an FYI…new registrations to the message board at www.durhc.com/bb are not currently sending out emails properly.  Drexel’s SMTP servers seem to have a problem with the web server that is sending out the emails and is blocking them. I will be checking the registration queue regularly, but if you want to expedite it, please send an email to cio@durhc.com and tell me that you registered and I’ll activate the account.

Full details:

[devnullgt@615314 ~]$ telnet smtp.mail.drexel.edu 25
Trying 144.118.31.27…
Connected to smtp.mail.drexel.edu (144.118.31.27).
Escape character is ‘^]’.
220 smtp.mail.drexel.edu pm1 ESMTP SPAMINATOR
HELO 615314.ds.nac.net
250 smtp.mail.drexel.edu
MAIL FROM:do-not-reply@durhc.com
250 Ok
RCPT TO:ANY_EMAIL@drexel.edu
554 <615314.ds.nac.net>: Helo command rejected: Better luck next time

However, using another DNS name as part of the HELO command seems to work. It doesnt really make much sense, as the A record and PTR records exist for the nac.net domain (which is where this webserver is hosted).

Funny enough, mxtoolbox doesnt have any problems with it. http://www.mxtoolbox.com/diagnostic.aspx?HOST=mail.durhc.com

If it continues I’ll probably be contacting Drexel IRT, but since I moved webservers it may just be cached DNS or something.