[pfx] Re: gmail failing SPF/DKIM

2023-11-27 Thread Wietse Venema via Postfix-users
Linkcheck via Postfix-users: > I maintain several web sites containing at least one web form. Forms are > sent to my established postfix server to be turned into properly > constructed email and sent on. The server is used for many conventional > emails per day and set up to provide suitable

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Ralf Hildebrandt via Postfix-users
* Linkcheck via Postfix-users : > If someone wishes to check this, a typical form (which is sent to me with > copy to "you") is at > https://www.linkcheck.co.uk/ > under menu option Contact & Enquiries. I tried your form: Authentication-Results: mail-cbf-ext.charite.de; dkim=pass

[pfx] gmail failing SPF/DKIM

2023-11-27 Thread Linkcheck via Postfix-users
I maintain several web sites containing at least one web form. Forms are sent to my established postfix server to be turned into properly constructed email and sent on. The server is used for many conventional emails per day and set up to provide suitable dkim etc. All domains have correct

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Linkcheck via Postfix-users
I know that comment was not aimed at me but: I meant to include the protonmail header at the outset but forgot. Sorry. Below is all the header except protonmail's anti-spam section; I hope it helps. == Return-Path: X-Original-To: linkch...@protonmail.com Delivered-To:

[pfx] Re: gmail failing SPF/DKIM

2023-11-27 Thread Shawn Heisey via Postfix-users
On 11/27/23 07:40, Linkcheck via Postfix-users wrote: The forms also send a copy to the sender as confirmation. Most of these, as far as I know, get delivered but recently gmail has been rejecting them with the message: 550-5.7.26 This mail has been blocked because the sender is    

[pfx] Re: gmail failing SPF/DKIM

2023-11-27 Thread Linkcheck via Postfix-users
Thanks, Shawn, appreciated. Hadn't thought of the dmarc report; I'll check it out. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org

[pfx] Postfix authenticated sender and From: header verification

2023-11-27 Thread Vijay S Sarvepalli via Postfix-users
Hello Postfix community, This may be a feature request. As far as I can tell it is currently not possible to verify if an authenticated user has sent email that uses a From: header (After DATA command) that does not match his/her credentials. The features

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Peter via Postfix-users
This doesn't help much, except to show that things look good for protonmail. Protonmail doesn't appear to have IPv6 support while google does. It is entirely possible that you're trying to send to google via IPv6 and you don't have an record for mail.bristolweb.net. This would result in

[pfx] Re: Postfix authenticated sender and From: header verification

2023-11-27 Thread Wietse Venema via Postfix-users
Vijay S Sarvepalli via Postfix-users: [ Charset windows-1252 converted... ] > Hello Postfix community, > > This may be a feature request. As far as I can tell it is currently > not possible to verify if an authenticated user has sent email > that uses a From: header (After DATA command) that does

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Viktor Dukhovni via Postfix-users
On Mon, Nov 27, 2023 at 04:50:55PM +, Linkcheck via Postfix-users wrote: > Dkim-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linkcheck.co.uk; > s=mail; > t=1701091213; bh=...; > h=Date:To:From:Reply-To:Subject:From; > b=... Have you tried leaving out the largely redundant "s=" from

[pfx] Re: gmail failing SPF/DKIM

2023-11-27 Thread Linkcheck via Postfix-users
(Sorry, Wietse, I always forget to change the To field) > gmail rejects all messsages Seemingly only from web forms. We are in daily contact with at least one gmail user, with no problem, using the example domain I posted and with which I'm posting this. We do get a small number of genuine

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Linkcheck via Postfix-users
Thank you, Ralf; I got the form ok. > Looking good if you ask me Thanks. I couldn't fault it, either. ___ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org

[pfx] Re: [ext] gmail failing SPF/DKIM

2023-11-27 Thread Viktor Dukhovni via Postfix-users
On Mon, Nov 27, 2023 at 04:04:12PM +0100, Ralf Hildebrandt via Postfix-users wrote: > * Linkcheck via Postfix-users : > > > If someone wishes to check this, a typical form (which is sent to me with > > copy to "you") is at > > https://www.linkcheck.co.uk/ > > under menu option Contact &