[pfx] Getting Recipient when Message size limit is exceeded

Hi all... Currently Postfix do not show in log the Recipient of emails that exceed Meesage_size_limit becasue MAIL FROM comes before RCPTO TO... butis there any nice way of forcing Postfix to reject that email after the RCPTO TO? I have considered to make a body check like this: /.{10-}/

[pfx] Re: Getting Recipient when Message size limit is exceeded

Thanks all!!! digging it Pete. On Friday, July 7, 2023 at 09:45:03 PM GMT+2, Wietse Venema via Postfix-users wrote: If no-one else posts one, I can post a solution that: - relies on smtpd_delay_reject=yes to postpone check_policy lookup until RCPT TO. - disables the SIZE announcem

[pfx] Content_filter selection based on sender domain

Hi all, does anyone know how to use different content_filter based on sender domain? Thanks in advance! Pete. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org

[pfx] Chaining XFORWARD

Hi, Postfix documentation states clearly that XFORDWARD is intended for scenarios like this: Client -> MTA1->  Content_filter -> MTA2 And then Content_filter is able to get  the IP of Client. Works great! But i was wondering... what i chain more MTAs? Client -> MTA1 - > MTA2 -> Content_filter ->

[pfx] Re: *.mail.protection.outlook.com reporting "452 4.5.3 Too many recipients (AS780090)" for many domains

Microsoft incident EX680695 (sorry if i recall wrongly). Solved now! Pete. On Wednesday, October 11, 2023 at 03:24:03 PM GMT+2, Matus UHLAR - fantomas via Postfix-users wrote: On 11.10.23 15:06, Ralf Hildebrandt via Postfix-users wrote: >Since this morning, various MX hosts in *.mail.pr

[pfx] Re: Chaining XFORWARD

Thanks Wietse, sometimes we want to stretch Postifx like gum beyond limits... Thanks again, Mr! Pete. On Thursday, October 12, 2023 at 02:32:11 PM GMT+2, Wietse Venema via Postfix-users wrote: Pedro David Marco via Postfix-users: > Hi, > Postfix documentation states clearl

[pfx] SMTP Smuggling and filters

Hi all, after reading the documention from Viktor and Wietse about this issue, there is still something i do not have clear enough... Please excuse me! How does Postfix behave with the smuggled email? i mean... what happens with Milters and after-queue filters?  To my understanding, the Smuggled

[pfx] Re: SMTP Smuggling and filters

Thanks Wietse, yes it is clear in your doc, but both messages go through filter?? despite what the MAIL FROM is? Thanks, Pedro. On Tuesday, December 26, 2023 at 03:34:34 PM GMT+1, Wietse Venema via Postfix-users wrote: Pedro David Marco via Postfix-users: > To my understanding,

[pfx] Re: Postfix stopped logging lines with sender IP addresses after upgrade

On Tuesday, January 2, 2024 at 08:46:01 PM GMT+1, Vince Heuser via Postfix-users wrote: >I recently upgraded to mail_version = 3.4.23 >Suddenly, Postfix no longer logs the lines with IP addresses for the >connections. >There use to be some additional log lines with sender ip addresses.

[pfx] Dedicated servers for Address Verification Probes

Hi all, is it possible to have several Postfix instances to use a centralized Postfix server for address verification probes when this centralized server is NOT an MDA but a relay to external MDAs? Thanks in advance! Pete. ___ Postfix-users mailing list

[pfx] Postfix SMTP with multiple MX and multiple servers each

Hi everybody... i think Wietse has explaned this before, but i cannot find the posts, so please excuse with me if i ask this again. I would like to clearify with myslef how Postfix smtp daemon deals with remote MXs of a destination. 1.- When there are different MX with different weight but the DN

[pfx] Re: Postfix SMTP with multiple MX and multiple servers each

Viktor, thanks a lot for your time. it is now cristal clear to me...  i owe you a beer! :-) Kind regards, Pete. On Tuesday, September 3, 2024 at 06:02:00 AM GMT+2, Viktor Dukhovni via Postfix-users wrote: On Tue, Sep 03, 2024 at 10:12:57AM +0800, LinuxMail.cc via Postfix-users wrote:

[pfx] Adding extra fields to smtpd log

Hi everybody... is there anyway to make smtpd and/or qmgr be slighty more verbose? i would like to have more info pero line about "from" and "to", something like this: Feb 13 12:34:56 mailserver postfix/smtpd[12345]: 6F84B1A241: client=mail.example.com[192.168.0.1], from=, to=, size=1234, nrcpt=

[pfx] Closing smtpd idle connections

Hi everyone, I'm running a Postfix server and have encountered an issue where some SMTP clients (usually Amazon servers) keep their connections open even after successfully sending a message. Over time, this behavior causes all available smtpd connection slots (e.g., 100 concurrent connections)

[pfx] Re: Closing smtpd idle connections

Thanks Viktor, i missundersating postfix documentation... i am doing something wrong Thanks  a lot again! Pete. On Wednesday, June 11, 2025 at 06:25:22 PM GMT+2, Viktor Dukhovni via Postfix-users wrote: On Wed, Jun 11, 2025 at 03:35:07PM +, Pedro David Marco via Postfix-users

[pfx] Re: Recipients not showed in mailq after moving them to hold queue

David Marco via Postfix-users: > > Hi, > > I'm using Postfix 3.7.11 and I've noticed that when a message is moved to the > HOLD queue, the mailq command does not display the recipient(s) of that > message. > > Additionally, even after releasing the message from H

[pfx] Re: Recipients not showed in mailq after moving them to hold queue

Thanks Benny, and sorry for the HTML part... (my fault) It seems i have a whimsical DKIM signer that needs some review.. :-) Regards, Pete. On Tuesday, July 22, 2025 at 02:16:10 PM GMT+2, Benny Pedersen via Postfix-users wrote: Pedro David Marco via Postfix-users skrev den 2025-07-22

[pfx] Recipients not showed in mailq after moving them to hold queue

Hi, I'm using Postfix 3.7.11 and I've noticed that when a message is moved to the HOLD queue, the mailq command does not display the recipient(s) of that message. Additionally, even after releasing the message from HOLD to the deferred queue using postsuper -H , the mailq output still hides th

[pfx] Centralized Address verification database

Hi everybody... In theory, it's possible to centralize and share the Postfix address verification database used by verify daemon across multiple servers using memcache Please, has anyone implemented this setup? If so, how well does it work in practice? Thanks in advance, Pete._