Hi there
We've been getting this error message for weeks now whenever we send a group email to our staff many of whom have Gmail addresses. It's very problematic so we would appreciate it if this could be looked into?
This message was created automatically by mail delivery system.
THIS IS A WARNING MESSAGE ONLY.
YOU DO NOT NEED TO RESEND YOUR MESSAGE.
The original message was received at Sun, 04 Nov 2018 12:16:33 -0800
from ....
----- The following addresses had fatal errors -----
[Status: Error, Address: <
...@gmail.com
>, ResponseCode 421, 4.7.0 This message does not have authentication information or fails to pass
4.7.0 authentication checks. To best protect our users from spam, the
4.7.0 message has been blocked. Please visit
4.7.0 information. 144si14806875pga.322 - gsmtp]
Message will be retried for 4 more day(s)
----- Transcript of session follows -----
Received:from mail.zoho.com by mx.zohomail.com
with SMTP id 1541359721214303.52230234101944; Sun, 4 Nov 2018 11:28:41 -0800 (PST)
Message-ID:<
>
Date:Sun, 04 Nov 2018 14:28:41 -0500
From ...
User-Agent:Zoho Mail
Subject:Updates and Screeners!
Content-Type:multipart/alternative;
boundary="----=_Part_630842_1573394534.1541359721200"