Trying to understand some email issues
plmahan at gmail.com
Mon Jan 21 06:33:16 UTC 2019
Running postfix 3.3.2_1,1
I'm getting hammered with thousands of emails from yahoo.com -
Here is an example -
Jan 20 22:09:01 ns postfix/smtp: 2DA97A2E2EF: to=<pwascak at aol.com>,
delays=13728/0.31/1.1/0.06, dsn=4.7.0, status=deferred (host
mx-aol.mail.gm0.yahoodns.net[220.127.116.11] said: 421 4.7.0 [TSS04]
Messages from 18.104.22.168 temporarily deferred due to user complaints -
22.214.171.124; see https://help.yahoo.com/kb/postmaster/SLN3434.html (in reply
to MAIL FROM command))
I'm trying to determine if I am somehow relaying emails to yahoo.com, or is
this someone attacking me.
I am pretty sure I have postfix to avoid acting like a relay for
unauthenticated connections. But this maybe something I have messed up.
This has been happening only since I upgraded to 11.2 (I was at 9.x). I
also just recently switch from sendmail to postfix as well.
I can provide my postfix config on request if needed.
Pointers to other mail-lists are welcomed. I decided to start here before
jumping on the postfix mailing list.
Thanks in advance,
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