Emails Rejected
We recently had a new Firewall / Router installed by a third party company who mishandled the project and was fired. Now we are left to clean up their mess. The last of the issues to be cleaned up is:
A small portion of outgoing (SMTP) email traffic is being rejected by the the recipient. The delivery failure message references our router's internal IP Address (as opposed to our external IP Address of our DNS Host), as well as the Computer Name of the sender.
Any help on the matter would be great, as we cannot figure this out. Thanks1
A small portion of outgoing (SMTP) email traffic is being rejected by the the recipient. The delivery failure message references our router's internal IP Address (as opposed to our external IP Address of our DNS Host), as well as the Computer Name of the sender.
Any help on the matter would be great, as we cannot figure this out. Thanks1
There might have several reasons for delivery failure.One of the common reason is blacklisting.However, you need post delivery failure message.
ASKER
Yes, it's strange because we are getting some delivery failures stating that we are blacklisted. But the fact that others report the internal IP of the router makes me think that that's the problem and the other servers throwing it back with that error.
On a side note, there is always the possibility of having been hacked and used for spamming. We have been requesting to be removed from blacklists. Microsoft (Hotmail) removed us and email are going through; on the other had AT&T reports blocked for abuse as well, but repeated requests to them have not allowed our emails to go through.
Here is the top portion of the delivery failure message:
Could not deliver message to the following recipient(s):
Failed Recipient: support@windward.net
Reason: Remote host said: 601 Attempted to send the message to the following ip's:
208.65.144.13, 208.65.145.12, 208.65.144.12
-- The header and top 20 lines of the message follows --
Received: from ImyComputerName(UnknownHost [192.168.0.254]) by SwaffordTransport.com with SMTP;
On a side note, there is always the possibility of having been hacked and used for spamming. We have been requesting to be removed from blacklists. Microsoft (Hotmail) removed us and email are going through; on the other had AT&T reports blocked for abuse as well, but repeated requests to them have not allowed our emails to go through.
Here is the top portion of the delivery failure message:
Could not deliver message to the following recipient(s):
Failed Recipient: support@windward.net
Reason: Remote host said: 601 Attempted to send the message to the following ip's:
208.65.144.13, 208.65.145.12, 208.65.144.12
-- The header and top 20 lines of the message follows --
Received: from ImyComputerName(UnknownHost [192.168.0.254]) by SwaffordTransport.com with SMTP;
Please provide message headers and even you can also read out the reason behind it. I think the error was relay access denied.
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ASKER
To Belushi:
No, it could be any user.
No, it could be any user.
ASKER
To Rigan:
The PTR seems to be the problem. We have spoken with our ISP (Charter) and our Mail Service Provider (Smarter Mail). Neither of them have been able to help us solve the issue.
The PTR seems to be the problem. We have spoken with our ISP (Charter) and our Mail Service Provider (Smarter Mail). Neither of them have been able to help us solve the issue.
So many mail servers like AOL won't accept email from your server if you don't have PTR record.
when you do nslookups on your email external a records and mx records, what do they return?