On 30 Mar 2021, at 1:57, Tom Kerswill wrote:
When I use mailmate to 'send as' one of these addresses, Gmail rejects
it.
When I look at the headers of that sent mail, they are different from
messages sent by other mail clients or Gmail itself. The messages from
mailmate do have the correct from address, but my actual Gmail address
also
appears to be there as a Return-Path header.
That is NOT being done by MailMate. I have confirmed by testing just now
that when MailMate sends mail from an address that is not the main one
for an account, it uses the secondary address as the SMTP envelope
sender, which is normally where the Return-Path header on delivered mail
comes from. GMail is apparently using your authentication address
instead, which is perverse.
I am curious about what is actually happening with your mail, since if
GMail is rejecting it outright I would expect you to have nothing to
look at with a 'wrong' Return-Path. Are they accepting it initially and
then generating a bounce message? it also is odd that other clients
don't have this issue. Are you looking at messages with exactly the same
alternative address but different clients?
Is it possible to use mailmate with Gmail, to send as a different
email
address, similar to what I do with other mail clients? What are the
steps
to do this?
I can't answer this directly, as I have no GMail account set up for
sending from non-GMail addresses. I can say that unless MM is sending
via GMail differently than it does for other SMTP servers (which would
be a surprise) it is doing the best that it can and the problem is with
GMail's quirks or an external issue like SPF.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
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