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
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
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
https://www.postfix.org/postconf.5.ht
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
Thanks, Shawn, appreciated.
Hadn't thought of the dmarc report; I'll check it out.
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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
unauthent
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: linkc
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 & Enquiri
Thank you, Ralf; I got the form ok.
> Looking good if you ask me
Thanks. I couldn't fault it, either.
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(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 b
* 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 heade
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 dki
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 SPF,
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