I have been receiving Delivery Status Notification (Failure) e-mails from Google's Mail Delivery Subsystem (firstname.lastname@example.org) containing errors like this:
Delivery to the following recipient failed permanently:
----- Original message -----
X-Received: by 10.98.87.15 with SMTP id
Wed, 27 Apr 2016 04:57:09 -0700 (PDT) Return-Path:
by mx.google.com with ESMTP id
Wed, 27 Apr 2016 04:57:08 -0700 (PDT) Received-SPF: neutral
(google.com: 22.214.171.124 is neither permitted nor denied by domain of
spf=neutral (google.com: 126.96.36.199 is neither permitted nor
denied by domain of Tal[snip]email@example.com)
smtp.mailfrom=Tal[snip]firstname.lastname@example.org Received: from
www.mydomain.com ([127.0.0.1]) by AMAZONA-BAACCEE with Microsoft
Wed, 27 Apr 2016 13:57:08 +0200 Date: Wed, 27 Apr 2016 13:57:08
+0200 Return-Path: Tal[snip]email@example.com To:
"lau[snip]@de[snip].com.au" From: Deshawn
Talley Subject: Price list Message-ID:
X-Mailer: PHPMailer [version 1.73] MIME-Version: 1.0 Content-Type:
X-OriginalArrivalTime: 27 Apr 2016 13:57:08.9903 (UTC)
I use this gmail to send form responses in my website to myself via SMTP.
There is no message like this in my "Sent Mail" folder.
Should I be concerned with my account's password?
How can I stop receiving this messages and stop these bots from spamming on my behalf?