Hi all, recently I had asked if there was a reason to use the port 587
if I installed spamdyke (because spamdyke authenticated my dynamic
users and ignored the rbls). Well, maybe I've found something that
would still require me to use 587 instead of port 25. I would
appreciate any info.
As of right now, my staff are using port 25 for outbound - I just
didn't see the need to have another port open to the outside when
after installing spamdyke, they were able to send and were not blocked
as "dynamic". But the staff have been having trouble sending to
yahoo.com, and in looking at the headers on a message that finally
arrived into yahoo (and gmail) the headers show this:
Authentication-Results: mta553.mail.mud.yahoo.com from=mydomain.com;
domainkeys=fail (bad sig)
But I had gone through the process step by step and tested my DKIM
with the sourceforge.net sites, and those showed that my dkim seemed
accurate. So, anyway in a brilliant flash of light I decided to try
port 587, and on my first try I got these headers in an email sent to
yahoo and gmail:
Received-SPF: pass ....
DomainKey-Status: good
Authentication-Results: mx.google.com; spf=pass ...
So, I guess my question would be, does something in the spam checking
on outbound emails from pop3/smtp users (not imap and squirrelmail)
with spamdyke, rewrite the headers after the dkim has processed the
email which would cause my DKIM hash to be invalid when yahoo and
gmail check it?
CentOS 5
x86_64bit
Thanks
John
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