Outgoing Mail delivered but not received

[coolemail]

I have CentOS5 with ASL and Plesk 9.2.3. We have a customer who has not received an email from us with an attachment. The attachment is a pdf document. He receives emails without attachments. And he used to receive these monthly emails with attachments OK.

We sent, and traced, two emails each with an attachment to two different email addresses of his on different domains which appear to have been received by their mail server:

May 10 13:06:21 plesk2 qmail: 1273493181.407417 new msg 14811379
May 10 13:06:21 plesk2 qmail: 1273493181.407493 info msg 14811379: bytes 113859 from <christoph@emailitis.com> qp 4717 uid 2020
May 10 13:06:21 plesk2 qmail-queue-handlers[4714]: starter: submitter[4717] exited normally
May 10 13:06:21 plesk2 qmail: 1273493181.415376 starting delivery 80625: msg 14811379 to remote david.hewlett@myplacemedia.tv
May 10 13:06:32 plesk2 qmail: 1273493192.264775 delivery 80625: success: 174.136.50.158_accepted_message./Remote_host_said:_250_OK_id=1OBRkl-0005tU-Ao/

May 10 13:06:21 plesk2 qmail: 1273493181.407417 new msg 14811379
May 10 13:06:21 plesk2 qmail: 1273493181.407493 info msg 14811379: bytes 113859 from <me@mydomain.com> qp 4717 uid 2020
May 10 13:06:21 plesk2 qmail-queue-handlers[4714]: starter: submitter[4717] exited normally
May 10 13:06:21 plesk2 qmail: 1273493181.415376 starting delivery 80625: msg 14811379 to remote customer@domain1.com
May 10 13:06:32 plesk2 qmail: 1273493192.264775 delivery 80625: success: 174.136.50.158_accepted_message./Remote_host_said:_250_OK_id=1OBRkl-0005tU-Ao/

and

May 10 13:49:29 plesk2 qmail: 1273495769.057517 new msg 14813927
May 10 13:49:29 plesk2 qmail: 1273495769.057571 info msg 14813927: bytes 117851 from <me@mydomain.com> qp 15576 uid 2020
May 10 13:49:29 plesk2 qmail-queue-handlers[15562]: starter: submitter[15576] exited normally
May 10 13:49:29 plesk2 qmail: 1273495769.066779 starting delivery 80756: msg 14813927 to remote customer@domain2.com
May 10 13:49:37 plesk2 qmail: 1273495777.667423 delivery 80756: success: 174.136.50.11_accepted_message./Remote_host_said:_250_OK_id=1OBSQV-000384-La/

So I've told them that their domain host company has received the email and they should check with them to see what has happened to the email. Can I do anything more my end to try and force it through when there are attachments.

As we said, emails without attachments are getting through OK.

many thanks in advance for any help.

[coolemail]

Whilst happy in my own mind that the problem above lies with the 3rd party's host, I'd love comment from the experts. Can anyone help?

[scott]

The remote host is saying that they received the message successfully here:

"Remote_host_said:_250_OK"

So definitely not a problem on your end. That message code would also mean that it passed by any smtp layer checks (greylisting, rbls) with no issues. Thats as far as the debug messages will get you from your side.

[coolemail]

Thank you for the clarification Scott