On 2021-03-12 4:58 a.m., Hans-Martin Mosner via mailop wrote:
Am 12.03.21 um 11:53 schrieb Arne Allisat via mailop:
* Ensure that the following email headers included in your message are
syntactically correct: Date, From, Sender, To.
From: User<[email protected]>
Subject: Re: topic
To: [email protected]=29?=<[email protected]>
Cc:"[email protected]" <[email protected]>
There is no Sender header, AFAIK it is not mandatory.
They MIGHT be meaning the MAIL FROM formatting of course, but you are
right. While we get that SOME information an email administrator might
not want to expose, eg methods to catch spammers, all MTA's should give
a fuller rejection notice.
For our platforms, we present an actual URL in the 5xx message to help
the innocent.
Eg,
https://spamauditor.org/best-practices/check-ip-reverse-dns/
--
"Catch the Magic of Linux..."
------------------------------------------------------------------------
Michael Peddemors, President/CEO LinuxMagic Inc.
Visit us at http://www.linuxmagic.com @linuxmagic
A Wizard IT Company - For More Info http://www.wizard.ca
"LinuxMagic" a Registered TradeMark of Wizard Tower TechnoServices Ltd.
------------------------------------------------------------------------
604-682-0300 Beautiful British Columbia, Canada
This email and any electronic data contained are confidential and intended
solely for the use of the individual or entity to which they are addressed.
Please note that any views or opinions presented in this email are solely
those of the author and are not intended to represent those of the company.
_______________________________________________
mailop mailing list
[email protected]
https://list.mailop.org/listinfo/mailop
