Re: [cobalt-users] Sendmail shutting down - raq3

[Dmitry Alexeyev <dmi_a@xxxxxxxxxx>]

Hi

Probably sendmail stopped accepting mail when the server load was too 
high (check uptime to see load averages) or number of connection per 
second was too high... 

You may try to put 
@xx.co.za 	DENY

to your /etc/mail/access
and rebuild the access.db

(I don't remember in what version first this feauture has appeared)

Another thing you can do is to activate dnsbl (relays and proxies) 
service, so 85% of those connections will be refused. 

Dmitry

> 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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