Software

Ask something
Discussion Locked

Mail bouncing

0 helpful
1 reply

by amaran_a

Closed to new repliesThis discussion is closed. It stays readable, but it takes no new replies.

My mails are getting bounced back to certain recepients indicating the following error
"Error transferring to abc@def.com; SMTP Protocol Returned a Permanent Error 451 4.1.8 Domain of sender address aa.amaran@abc.com does not resolve"
At the same time I have no problem in sending and receiving mails from other users.
Kindly help.

1 reply

by brasslet

The reciepient mail server is doing a reverse DNS lookup on your mail, but it fails and is therefore returning your mail. Some mail servers are set up this way as a sort of security measure. To avoid this, you (or your ISP) need to set up a PTR record for your mail server in DNS so that your mail server's IP address can be resolved to a name.

This discussion is closed to new replies.