[cobalt-users] Sendmail shutting down - raq3

["Michelle Hall-Jones" <support@xxxxxxxxxx>]

Hi

I am hoping someone can assist with the following:
Our SMTP server started shutting down from the early hours of this morning,
then restarting. I went into the maillog & noticed that for the last 10hrs
the server has been receiving the following data:
Feb 22 05:46:25 xxx sendmail[10829]: FAA10829: <grantor@xxxxxxxxx>... No
such user here

The user <grantor@xxxxxxxx> changes on every line to another user@xxxxxxxxx
(the same domain everytime) & the data beneath the user is:
proto=ESMTP, relay=mail2.orgio.net [211.115.216.247] <-- this part changes
with every attempt.

Is there a way I can stop this without having to exclude each 'relay' that
is listed on each line, for now I have switched off 'accept mail for this
doamin', but the smtp still keeps shutting down.

Many thanks & kind regards

Michelle
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