Postfix maxproc with multiple input ports

Jari Fredriksson jarif at
Sat Jul 18 21:11:33 CEST 2015

On 2015-07-18 07:03, Larry Stone wrote:
>> On Jul 17, 2015, at 8:47 PM, Jari Fredriksson <jarif at> wrote:
>> On 2015-07-14 20:09, Larry Stone wrote:
>>> I have amavisd-new running with Postfix. Amavisd-new is set to 
>>> listen
>>> to two ports (one for external mail being received (10024) and one 
>>> for
>>> originating mail (10026)). Max_servers is set to 4.
>>> I know with a single input port, I make Postfix maxproc for the 
>>> smtpd
>>> processes feeding Amavisd-new equal to max_servers. But with two
>>> ports, do I still set both Postfix smtpd process defintions to have
>>> maxproc equal to max_servers? Or do I make each equal to half of
>>> max_servers? Or something else?
>>> Related, are all amavis server processes capable of serving either 
>>> port?
>>> FWIW, this is a very low volume home email server (well under 1,000
>>> emails per day) so high-performance is not needed.
>> equal is the way. The other port in amavis does not matter, it does 
>> not listen postfix.
> Both ports listen to Postfix. Mail received by Postfix on port 25
> goes to port 10024 as a pre-queue filter
> (smtpd_proxy_filter= while mail received on port 587
> (submission) goes to port 10026 as a post-queue filter
> (content_filter=amavisfeed26:[]:10026).

Ok. So the threads in the receiving must be take care to be so.

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