Hi, okay that makes sense.

I guess my next question is what is going on when we get a bulk mail campaign 
or spam attack and I see the /var/spool/postfix/incoming 
Directory only allow 20,000 files in there ?


Thanks.

-ANGELO FAZZINA

ITS Service Manager:
Spam and Virus Prevention
Mass Mailing
G Suite/Gmail

ang...@uconn.edu
University of Connecticut,  ITS, SSG, Server Systems
860-486-9075


-----Original Message-----
From: owner-postfix-us...@postfix.org <owner-postfix-us...@postfix.org> On 
Behalf Of Wietse Venema
Sent: Tuesday, May 1, 2018 10:27 AM
To: Postfix users <postfix-users@postfix.org>
Subject: Re: postfix maximum load capacities by official document

Fazzina, Angelo:
> Hi again, I guess I don't have a clear understanding of this in the man page ?
> 
> Ran command
>       [root@mta1 ~]# man 5 postconf
> 
> default_recipient_limit (default: 20000)
> 
> The default per-transport upper limit on the number of IN-MEMORY
> recipients.

The Postfix mail queue is not an IN-MEMORY queue. That would limit
the amount of email that Postfix can handle, and it would violate
the requirement that mail is not lost after a system crash.

        Wietse

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