Neo, Jeff,
Thanks for the advice, I will do as you say.
Just to clarify, it would appear that the server accessing SMTP sever #5 is
having problems, whereby other other server #142 appears OK.
Prior to contacting Comcast on this matter, I will initiate further logs,
and send single emails to the error-prone accounts and qualify that the
server numbers are the same in all cases via the logs (now I am aware of what
I am looking for).
One thing I still do not fathom though, is how does the Comcast server
determine which SMTP server it will use for the delivery. If this is random
(to an extent) then it is more than a coincidence that the same addressees
are returning errors notwithstanding what order they are sent in.
Also, whereby I may have multiple addressees to a single email instance
posted, can multiple SMTP servers be used by Comcast in determining which
sever(s) to use?
Thanks again for all you help, the both of you, I wish you each a very Happy
New Year, and I will post any results/replies back to you, also what my
examination of the log revelas concerning server numbers and their responses.
Tony
Jeff Stephenson said:
I agree with Neo - I missed that you were hitting two different servers
when I looked at the logs.
--
Jeff Stephenson
Outlook Development
This posting is provided "AS IS" with no warranties, and confers no rights
Looking at this log, it looks like Outlook is talking to 2 different SMTP
servers.
#1 - Maillennium ESMTP/MULTIBOX sccrmhc13 #5 (This one failed w/ 450)
#2 - Maillennium ESMTP/MULTIBOX sccrmhc12 #142 (This one worked)
Right about now, I would log a few more tries and then share this
information with Comcast because it is possible that one of their SMTP
servers is misconfigured or having issues.
Logicalman said:
Jeff,
The KB article is 872896. This refers to error 450, though I have also
experienced (on the same email accounts) error 550 - [PERMFAIL]
destination not valid within DNS, which sometimes arrived either after,
or instead of, the 450 error for the same address(es).
<snip>