At 08:17 AM 8/19/2006, you wrote:
I have a new client running Eudora Windows 7.01, and she can send
and receive e-mails just fine. But if she tries to send an
attachment, even a small one, SIMS reports an Abort received,
reason=54. On her end, Eudora reports "error writing to network.
Cause: connection reset by remote side (10054)." Then, ever after,
she can send no e-mails at all, with or without attachments. POP still works.
Could this be an MTU problem? I've had that crop up on me,
seemingly out of the blue on machines that had been talking to a SIMS
machine fine for years. Small emails would be sent, but not large
ones -- it'd just hang and then timeout. Beat myself silly on it
trying to figure it out. Turns out, it was an MTU problem, i.e. the
machine was trying to send packets to big and they seem to get
confused while breaking up the packets into smaller ones. A Win98
machine has a limit of 1200 while a pa
To test this, have her ping your mail server, varying the
packet size to see what the MTU is. See:
http://www.netopia.com/support/hardware/technotes/NIR_067.html
You then have them adjust their OS's MTU size to be below that limit.
It is magic to the user when you diagnose this problem because they
also may be suffering with web surfing problems that also magically disappear.
Joe
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