Milter-greylist

Vladimir Vassiliev a \ufffdcrit :
> I use milter-greylist already month and all was ok.
> But today I'm getting too many messages "Milter (greylist): timeout before data read, where=mail"
> Here piece of log. In this example connection discontinued but that happened after "rcpt to".
> So what happened with milter-greylist?
> 
> Jun  5 15:07:28 mail sendmail[8199]: m55B76aq008199: Milter (greylist): timeout before data read, where=mail
> Jun  5 15:07:28 mail sendmail[8199]: m55B76aq008199: Milter (greylist): to error state
> Jun  5 15:07:28 mail sendmail[8199]: m55B76aq008199: <qbjc@...>... User unknown.
> Jun  5 15:07:28 mail sendmail[8199]: m55B76aq008199: lost input channel from ppp91-76-73-165.pppoe.mtu-net.ru [91.76.73.165] to MTA after data
> Jun  5 15:07:28 mail sendmail[8199]: m55B76aq008199: from=<dima-voroncov@...>, size=0, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=ppp91-76-73-165.pppoe.mtu-net.ru [91.76.73.165]
> 

You may need to increase your milter timeouts in your MTA config.

If you use SPF, DNSRBL or URLCHECK in your greylist.conf, default 
sendmail timeout is definitely too low for reliable operation. See 
Milter-greylist's README for details.

Or it may be the client itself which did not send data quick enough. 
Nevertheless in you example the client seems to be some sort of DUL or 
dynamic customer, so it doesn't matter to drop it since it's probably a 
trojaned spammer.


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