Cami Sardinha wrote:
> Geert Hendrickx wrote:
>> Hi,
>>
>> has anyone experienced bad interaction between greylisting and (by default)
>> low smtpd_hard_error_limit settings in postfix?  Our smtpd_hard_error_limit
>> has always been pretty high so I can't tell from my own experience.  But
>> with greylisting, clients get an error on each RCPT command initially, so I
>> can imagine that (legitimate) bulk senders may get disconnected too easily
>> and will only be able to insert (by default) 20 RCPT's into the greylisting
>> table at a time, causing unintended extra long delays?
>>
>> Any experiences with that?
>>
>> http://www.postfix.org/postconf.5.html#smtpd_hard_error_limit
> 
> Interesting. We have at our large installations a very low limit (of 6)
> and never had any complaints / issues.

As Wietse has pointed out, you should be whitelisting the legitimate
bulk senders..

Cami

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