Re: SMTP issues?

Matti Aarnio (matti.aarnio@sonera.fi)
Fri, 25 Dec 1998 00:38:58 +0200 (EET)

> Hello,
>
> My school's SMTP server doesn't seem to reply to large-ish email messages. If
> I send a small one (like this), it works fine. But if the message is slightly
> larger (say 20 lines of text), it just sits there waiting for the final reply.
> I just wanted to make sure this has nothing to do with the kernel before I
> bitched to them about it.

Are you by change using SLIP, and/or somehow managed to
1) cause mismatch of your network link MTU values, 2)
somewhere along the path ICMP messages have been filtered out ?

By forcing your link to use MTU value of 572 MIGHT help with
SMTP sending. (As root: ifconfig XXXXn mtu 572)
Equally possibly it could then cause incoming datastreams
(like FTP transfers, POP/IMAP accesses) to effectively hang.

Check your network parameters.

> Thanks,
> m.

/Matti Aarnio <matti.aarnio@sonera.fi>

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