we published a new issue of our journal. Some of the notification mails came back as undeliverable (with various reasons, most being “inexistent accounts”, so probably fake registrations). I could look up these users and disable/delete them. However, there are mails returning that have neither corresponding account nor a cleartext name. i tried to look them up in the user database, but they simply do not exist.
Generierender Server: ex07htca01.pers.ad.uni-graz.at
#554 5.4.4 SMTPSEND.DNS.NonExistentDomain; nonexistent domain ##rfc822;firstname.lastname@example.org
Received: from EX13MS01.pers.ad.uni-graz.at (2002:8f32:dbf::8f32:dbf) by
ex07htca01.pers.ad.uni-graz.at (2002:8f32:d4f::8f32:d4f) with Microsoft SMTP
Server (TLS) id 8.3.515.0; Wed, 15 Nov 2017 08:59:38 +0100
Subject: [JRFM] New notification from JRFM
Date: Wed, 15 Nov 2017 07:59:34 +0000
From: “Prof. Dr. Daria Pezzoli-Olgiati” email@example.com
Reply-To: Christian Wessely firstname.lastname@example.org
yet the user database does not contain a user with that mail adress; even worse, a mail adress like this seems not to exist in the user db (which I viewed w/ phpMyAdmin).
So it seems that the system send out “ghost messages” to non existing accounts or accounts disabled long time ago …
Any ideas about that?
Would be grateful.