I tried to set up a Gmail forward for newsletters, but gmail’s verification emails are bouncing:
–
From: Mail Delivery Subsystem <mailer-daemon@googlemail.com>
Subject: Delivery Status Notification (Failure)
Delivery to the following recipient failed permanently:
***@newsletters.newsblur.com
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain newsletters.newsblur.com by
mxa.mailgun.org. [104.130.177.23].
The error that the other server returned was:
550 5.7.1 Relaying denied