Yunohost rejects email forwards with: 553 5.7.1 Sender address rejected: not logged in (in reply to RCPT TO command)

Support
1

My YunoHost server

Hardware: Digital Ocean VPS.
YunoHost version: 4.2.8
I have access to my server : Through SSH

Description of my issue

I set-up a forwarding address on gandi.net, for a group, to forward emails to contact@domain.tld to a few different email addresses, including my yunohost email.

the forwarded email arrives no problem at the other email addresses,
but for my yunohost email address, it is not delivered. And my yunohost returns a rejected delivery message:

myyuonohostdomain.tld[my.ip.address] said: 553 5.7.1 Sender address rejected: not logged in (in reply to
RCPT TO command)

why is my yunohost rejecting this forwarded email when other email addresses do not?

2

I think you tested by sending your test mail with your @myyuonohostdomain.tld email to contact@domain.tld.

So the yunohost instance evaluate that gandi send a mail with a sender in @myyuonohostdomain.tld… And it don’t like this cause your instance is the only one authorized to send mail in xxx@myyuonohostdomain.tld.

OR maybe you added the domain.tld to your yunohost ?

3

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