Hi,
I have one of our users who is unable to send an email to one of his clients. His messages get returned with this message:
Final-Recipient: rfc822;
Action: failed
Status: 5.0.0
Diagnostic-code smtp; Site teraco.com (12.12.240.139) said after data sent: 550 5.7.1 Please send this email to your IT personnel. 550-5.7.1 We are rejecting your email, because you were found on
zen.spamhaus.org spam black list.
His email takes the form of
authorized_user@ehowe.com I checked spamhaus.org and the IP address of ehowe.com is not being blacklisted. What is in their blacklist is his personal IP of the machine that he is sending the email from. It says 74.136.165.243 is listed in the PBL, in the following records:
PBL1548045 This is why I can send an email to his client from an ehowe.com email address and he can't.
Shouldn't his client's mail server (teraco.com) be checking that the message it is receiving is from our e
mail server given the address isHIDDEN@.com and then checking the IP for ehowe.com to make sure it's not blacklisted?
He tried to remove his IP address, which is assigned from his service provider, from the blacklist but spamhaus.org gave him this reply:
Removal of IP addresses within this range from the PBL is not allowed by the netblock owner's policy. Is there anything we can do here or is it all on his clients email server.
