how does postfix determine hostnames in 'received' header?

2023-01-31 Thread Michael
hey, i have multiple nullclients with the exact (!) same main.cf. all but one show the received header as expected, e.g.: Received: from host.domain.tld (host.domain.tld [10.0.0.1]) [...] Received: by host.domain.tld (Postfix, from userid 1000) [

Re: how does postfix determine hostnames in 'received' header?

2023-01-31 Thread Matus UHLAR - fantomas
On 31.01.23 15:51, Michael wrote: i have multiple nullclients with the exact (!) same main.cf. all but one show the received header as expected, e.g.: Received: from host.domain.tld (host.domain.tld [10.0.0.1]) ^^helo string^^ ^^dns name^^ ^^remote IP

Re: how does postfix determine hostnames in 'received' header?

2023-01-31 Thread Viktor Dukhovni
On Tue, Jan 31, 2023 at 03:51:23PM +0100, Michael wrote: > i have multiple nullclients with the exact (!) same main.cf. all but one > show the received header as expected, e.g.: > > Received: from host.domain.tld (host.domain.tld [10.0.0.1]) This added by the mailhub host when it receives

Backup MX Take 3

2023-01-31 Thread Jonathan Capra
GOAL: To have my backup MX only accept for addresses listed in /etc/postfix/relay_recipients(.db). I've gone back to the drawing board and wiped it clean in another attempt to get this working. I'm utterly confounded by what I might be doing wrong. I started fresh with a default copy of main.

Re: Backup MX Take 3

2023-01-31 Thread Viktor Dukhovni
On Tue, Jan 31, 2023 at 06:06:13PM -0500, Jonathan Capra wrote: > telnet caduceus.wtfayla.net 25 > Trying 50.75.172.140... > Connected to caduceus.wtfayla.net. > Escape character is '^]'. > 220 ca2ceus.wtfayla.net ESMTP Postfix (Debian/GNU) > helo fongaboo.com > 250 ca2ceus.wtfayla.net > mail from

smtpd_reject_unlisted_recipient and reject_unlisted_recipient behavior

2023-01-31 Thread postfix
I am looking to understand if I misinterpreted the documentation or if this is an issue with postfix. main.cf smtpd_reject_unlisted_recipient = no smtpd_data_restrictions = reject_unlisted_recipient My intention is to prevent postfix from rejecting invalid recipients at the RCPT comman

Re: smtpd_reject_unlisted_recipient and reject_unlisted_recipient behavior

2023-01-31 Thread Viktor Dukhovni
On Tue, Jan 31, 2023 at 11:30:59PM -0500, post...@ptld.com wrote: > I am looking to understand if I misinterpreted the documentation or if this > is an issue with postfix. > > main.cf > smtpd_reject_unlisted_recipient = no > smtpd_data_restrictions = reject_unlisted_recipient This won'