+1, and I think MOST MTA's already do that of course, but some ppl relay
out things like spam filters without an MTA in the middle..
Oh, and for my other 'rant' with companies that do auto generated bulk
email, for heavens sake add the 'auto-generated' headers..
Helps prevent all those vacation message system from generating a
response to those..
(Of course, some vacation message responders out there still ignore that
header, and they should be fixed)
On 18-03-19 02:25 PM, Heiko Schlittermann via mailop wrote:
Rob Nagler <[email protected]> (Mo 19 Mär 2018 21:56:12 CET):
..
It seems Message-ID is a "should" field so our software shouldn't require
it. However, many mailers and spam filters treat Message-IDs as "must".
We'll probably just add one, because some of our users are starting to get
frustrated with mails getting dropped.
Is adding a Message-ID field a reasonable idea? Alternative suggestions?
We add a the Message-ID on the submission host, if the client is to
stupid to do it. A serious mail service provider should take take that all
messages leaving his system carry a valid message ID, IMHO.
Best regards from Dresden/Germany
Viele Grüße aus Dresden
Heiko Schlittermann
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