[pfx] Re: Simple Backup MX with relay recipient validation

On 15.03.23 21:49, Fongaboo via Postfix-users wrote: myhostname = I usually don't set "myhostname" and let postfix use the one set in system. I configure my systems with hostname set to FQDN. smtpd_banner = $myhostname ESMTP mynetworks = 127.0.0.0/24 I prefer autoconfiguration via mynetwo

[pfx] Improper use of SMTP command pipelining

Hi One of my clients on my server is complaining that an important customer is being bounced Here is bounce ""Mar 13 15:05:30 mx postfix/smtpd[428904]: 4Pb0MZ2JX7z1srQ3: reject: DATA from dispatch1-us1.ppe-hosted.com [67.231.154.164]: 503 5.5.0 : Data comm

[pfx] Re: Improper use of SMTP command pipelining

William Bowden via Postfix-users: > I have disabled reject_unauth_pipelining to no avail the server appears to > be one of the big boys server any clues or ideas to allow this through. > Prove it. Show output postconf -n postconf -P Also, Postfix should log this: improper comman

[pfx] Re: Improper use of SMTP command pipelining

Wietse Venema via Postfix-users: > William Bowden via Postfix-users: > > I have disabled reject_unauth_pipelining to no avail the server appears to > > be one of the big boys server any clues or ideas to allow this through. > > > > Prove it. Show output > > postconf -n > postconf -P