Re: Connection Terminated

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"Rich Matheisen [MVP]" <richnews@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:d8q9f559v2c67srhmeff0il5e5rcnsj51j@xxxxxxxxxx
DATA is what they send to you. You should see a status code (354)
going back to them (which you do). If you see that, and there's no TCP
reset, then you should start to see the message being sent to your
server (assuming it's not a TLS connection).

No, it's not a TLS connection.

If they never see the 354 at their side then they'll never send the
message body and they /should/ send a QUIT (and maybe a RSET before
that). Your server should respond with a 221 to the QUIT (or 250 to
the RSET) and then the connection should be torn down.

In the packet capture, I did see the body + attachment (packets) start
coming through. Data flow gets terminated in the middle of the transfer.
Wireshark was able to rebuild the stream. I saved the message (about 3.6
MB). I can then open the message with Outlook Express and read the message
body. It looks ok. The file attachment (a PDF file), however, is corrupted
(I guess it's because data transfer gets interrupted). I can't open the PDF
attachment.

Does the other server show a QUIT being sent?

I'm only doing 1 sided troubleshooting (only at my network). I have no
knowledge of the other end of the connection.

But without knowing the details of the sending server's
protocol log and network trace these sorts of problems are never
easily solved.

I'm afraid so. I'll see if I can get a hold of their mail admin.


.

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