server not accepting outgoing mail

Hi, our mail server is running nicely for years. There is one recipients server that doesn't accept our mails with a "time out" response without sending a more detailed error message. I have attached the -v log output, but only the part that is produced by the smtp-process at sending to this re

Re: make transport decisions based on headers not envelope

Sean Hennessey: > I was using the sender_dependent_default_transport_maps to pick > off what I thought was going to be the interesting from domain. > The good news is that this mail is coming from customer applications. > It's not coming from regular user mail clients. So I can guarantee > there is

Re: server not accepting outgoing mail

Michael Schumacher: > Hi, > > our mail server is running nicely for years. There is one recipients server > that doesn't accept our mails with a "time out" response without sending a > more detailed error message. I have attached the -v log output, but only the > part that is produced by the sm

Re: Replacing initial "Received:" line on submission?

On 1/13/2023 12:02 AM, Benny Pedersen wrote: Jaroslaw Rafa skrev den 2023-01-12 21:52: Dnia 12.01.2023 o godz. 13:49:33 post...@ptld.com pisze: My solution... main.cf:     smtp_header_checks = pcre:/etc/postfix/header_checks_smtp /etc/postfix/header_checks_smtp:     /^Received:/   IG

relay transport ignore

Hi, i 've  question, i need to migrate a virtual domain from 2 server (with postfix). On the new server i define mail users and domain but it'isnt in production now dns record defined. On the same new soerver i've other virtual domain. I want that , for a few days, if one user of other domai

Re: Replacing initial "Received:" line on submission?

>>> 192.0.2.1:submission inet n - n - - smtpd >>> -o syslog_name=vpnsubmission >>> -o smtpd_sasl_auth_enable=no >>> -o >>> smtpd_relay_restrictions=permit_mynetworks,reject_unauth_destination >> -o header_checks=pcre:/etc/postfix/vpn_header_checks > > header_checks

Two internal servers, two inside fqdns, one outside fqdn

I have created a second postfix server in my LAN. The idea is to use both in a failover/loadbalancing setting for now. At the back are two dovecots that replicate to each other. When mail is sent out via my router, it picks up anything that goes out to port 25 and makes sure it comes from mail.

Re: none SRS issues

On 12.01.23 18:24, Emmanuel Fusté wrote: For to address the forwarding problem, you should add ARC to the sending and verifying stack, It was designed specifically for that, but not widely used, it is pretty experimental. ARC requires you to trust ARC signer as it is third party. -- Matus U

Re: Replacing initial "Received:" line on submission?

Hello!! Gerald Galster wrote in : |>>> 192.0.2.1:submission inet n - n - - smtpd |>>> -o syslog_name=vpnsubmission |>>> -o smtpd_sasl_auth_enable=no |>>> -o |>>> smtpd_relay_restrictions=permit_mynetworks,reject_unauth_destination |>> -o header_checks=pcre:/etc

Re: make transport decisions based on headers not envelope

On Fri, Jan 13, 2023 at 05:36:16AM +, Sean Hennessey wrote: > I was using the sender_dependent_default_transport_maps to pick off > what I thought was going to be the interesting from domain. The good > news is that this mail is coming from customer applications. It's not > coming from regular

Re: Replacing initial "Received:" line on submission?

On 13/01/23 08:40, Viktor Dukhovni wrote: On Thu, Jan 12, 2023 at 01:49:33PM -0500, post...@ptld.com wrote: My solution... main.cf: smtp_header_checks = pcre:/etc/postfix/header_checks_smtp /etc/postfix/header_checks_smtp: /^Received:/ IGNORE /^X-Originating-Ip:/

Queue postfix sending when on failover WAN

This is I suspect a little off-topic for here, in which case accept my apologies please. My Postfix instance is well-established on a LAN behind a WAN IP with a decent reputation. The internet router for the network has a 4G failover device for occasional downtime to ensure that critical co