[exim] problem with MS Exchange sending to exim

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Auteur: Chad Leigh
Date:  
À: Exim Users List
CC: Chad Leigh
Sujet: [exim] problem with MS Exchange sending to exim
I have an exim 4.51 mail server receiving mail for various domains.

We turned on a new domain to be served by our server yesterday.
freestylefund.com . They were previously with purehost or someone.
I added freestylefund.com to our "domainlist local_domains" config
and also added it to my ldap database which is used for delivery.
Most mail to this domain from outside is being delivered just fine.
The DNS changeover was yesterday afternoon. A few people are not
able to send mail to this domain. I get no clue of anything at all
related to these senders in our reject log (by name, by IP, by
anything). They all seem to coincidentally (or not) be running MS
Exchange... The errors they are getting are

------

Your message did not reach some or all of the intended recipients.

       Subject:  RE: <redacted>
       Sent:     11/17/2005 1:35 PM


The following recipient(s) could not be reached:

       ritzer@??? on 11/17/2005 1:35 PM
             The e-mail account does not exist at the organization  
this message was sent to.  Check the e-mail address, or contact the  
recipient directly to find out the correct address.


             < mars.kattenlaw.com #5.1.1 SMTP; 550 mail08: Host  
12.106.98.11: No relaying permitted to freestylefund.com>


       adrianmackay@??? on 11/17/2005 1:35 PM
             The e-mail account does not exist at the organization  
this message was sent to.  Check the e-mail address, or contact the  
recipient directly to find out the correct address.


             < mars.kattenlaw.com #5.1.1 SMTP; 550 mail08: Host  
12.106.98.11: No relaying permitted to freestylefund.com>



----

and

----

Your message did not reach some or all of the intended recipients.

       Subject:  RE: You get my invitation?


       Sent:     11/16/2005 5:37 PM


The following recipient(s) could not be reached:

       Adrian Mackay on 11/16/2005 5:37 PM


             There was a SMTP communication problem with the  
recipient's email server.  Please contact your system administrator.


             <actii-1.ACTIIPARTNERS.local #5.5.0 smtp;550 mailinc10:  
Host 66.9.26.11: No relaying permitted to freestylefund.com>


----



I have no clue on why these people could mail this domain before the
switchover but why they cannot after the switchover. It seems like
their local Exchange has some sort of anti-relaying policy that is
being violated and they are not even trying to send to me. These
people can send email to others and my customer is getting email from
others.



I have changed it now, but freestylefunds.com MX was pointing to
mail.freestylefunds.com which had an A record of 166.70.252.250 .
That is our email server that has its own canonical name of
hobbiton.shire.net. However, the reverse PTR lookup for
166.60.252.250 had 3 host names it returned -- hobbiton.shire.net,
mail.shire.net, and mail.freestylefunds.com . (I have change their
MX to point directly to hobbiton.shire.net to simplify matters).



Anyone have any idea what is going on and is the problem at our end
(either in exim or dns) or on their end (which on the surface looks
like it is). It is difficult to get access to the the IT people at
the senders as I guess they are law firms or something and want to
bill you a ton every time you sneeze in their direction, so my
customer wants to avoid involving them as much as possible...



Thanks

Chad




---
Chad Leigh -- Shire.Net LLC
Your Web App and Email hosting provider
chad@???