Milter-greylist

Vladimir Vassiliev a \ufffdcrit :
> On Thu, 05 Jun 2008 13:47:45 +0200
> Benoit Branciard <benoit.branciard@...> wrote:
> 
>> 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.
>>
> 
> Thanks. It works. Only thing I can't understand, what happened today. Load seems to be the same.
> 

Some DNS queries may be slower than usual; this depends not on the load 
of your system. One day we had such trouble and discovered it was caused 
by one of our DNSRBLs which took 30s to reply on each request...


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