I tried to answer the noreply@mytestdomain.com address for the forum being tested.
I received such a feedback message from
<MAILER-DAEMON@staff.contactoffice.com>
This is the mail system at host wilbur.contactoffice.com.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<noreply@mytestdomain.com>: host
inbound-smtp.eu-west-1.amazonaws.com[xx.xx.39.xx] said: 550 5.1.1
Requested action not taken: mailbox unavailable (in reply to RCPT TO
command)
Is there any reason to be concerned? Is bounce set correctly?
and so basically why does such a feedback come from staff.contactoffice.com?
Why is it from this address?
Why does it look like this? and who is wilbur.contactoffice.com. ??
I didn’t set it anywhere ? does it is aws automaton setting or how ?
But good. Your advice seems to be interesting. Only now I have a dilemma.
Wanting to use this guide -> Straightforward direct-delivery incoming mail
My question:
Should I also have to set mx records in AWS SES settings (MAIL from domain) or not ??
I mean this: