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Qmail Configuration - Mail Delivery Problems
Emails not received by exchange server

 4:16 pm on May 20, 2008 (gmt 0)

I'm trying to troubleshoot an email delivery problem for a client who has their website hosted on a dedicated linux server and hosts their email in-house on an exchange server. The messages (form submissions) from the website are sent through mambo's phpmailer and can be received by a variety of different addresses I have tested. They cannot receive messages in mailboxes on their own domain (exchange server), however.

The qmail error log says:

all addreses are uncheckable - need to skip scanning (by deny mode)

I get no response when pinging the mail server from the web host shell. My DNS knowledge is lacking, so I'm stuck here for the moment. Any help?




 5:44 pm on May 22, 2008 (gmt 0)

I checked out the DNS settings on a DNS testing site and it said everything was in order.

I noticed that in the qmail log the email addresses I'm having problems with are listed with the qmail local handlers

qmail-local-handlers[14660]: to=info@mydomain.com

It seems like qmail is trying to deliver to local mailboxes, but they only exist on the remote exchange server. Although I had no entry in /var/qmail/control/locals for the domain, I did have one in /var/qmail/control/virtualdomains. I deleted that, restarted qmail, and sent a test email, after which I checked the logs and see, as the final entry

starting delivery 1: msg 8407810 to remote info@mydomain.com

I haven't seen that message yet, so hopefully the problem is solved. I will confirm with the client.


 5:59 pm on May 22, 2008 (gmt 0)

That was it. Problem solved.

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