Started a few days ago the following situation:
This error only happens to the following Domain @bollore.com; everything i send to them, the NDR comes with the error 554 5.7.1 Helo invalid.
my domain: rcsangola.com
Customer Domain: bollore.com
They CAN send emails to me, i cannot send to them.
They are NOT blacklisted i checked it this morning. I am not blacklisted either.
The SPAM solution is not blocking their address either, otherwise it would show on the logs, i am using SYMANTEC MAIL SECURITY 4 EXCHANGE
What else can i check? Thanks for helping me.
Full error Message:
Your message did not reach some or all of the intended recipients.
Subject: Test 1 Email
Sent: 21-07-2009 15:34
The following recipient(s) cannot be reached:
XXXX.XXX@bollore.com on 21-07-2009 15:35
You do not have permission to send to this recipient. For assistance, contact your system administrator.
<my server name here #5.7.1 smtp;554 5.7.1 Helo invalid .>
EE Link checked so far: