Web Hosting Talk : Web Hosting Main Forums : Hosting Security and Technology : unroutable mail domain ?

[EpicServers]

I'm getting this error a lot;

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

someonesname@msn.com
unrouteable mail domain "msn.com"

What is the issue here? I get it for aol.com accounts also.

Help would be greatly appreciated.

[inteltechs]

/scripts/updatenow;/scripts/upcp;/scripts/fixcommonproblems

try that command also take a look at your /etc/localdomains and make sure msn.com is not there... also check your /etc/resolv.conf as well

[EpicServers]

Thanks for the quick response, I ran those, but not sure if the issue is resolved, I did find:

localhost.localdomain in my

/etc/localdomains

Should I take that out? It has the rest of my sites I've put up.

[inteltechs]

it looks to me that your hostname is messed up.

[EpicServers]

In my resolv.conf file I have it set as:

domain epicservers.com
search epicservers.com
nameserver 69.93.9.XX
nameserver 69.93.9.XX

Where XX's resolve to my correct nameservers.

[insite2000]

I am also getting "unroutable mail domain" errors - literally almost half of all the e-mail we send out, using Perl rather than PHP. We have Exim and CPanel on this account.

The host insists that they allow the user "nobody" to send e-mail, which I know can be a cause of this error. They now claim that we are sending too many e-mails per hour, although the most we've sent at once is 472 e-mails. However, our subscriber lists are growing and we are considering a dedicated server.

Will running our mailing scripts suid solve this problem? We are sending using MIME::Lite with the send_by_sendmail option set. Another thing I wonder about is if the mail is being rejected because it is not being sent with smtp authorization.

[ramystyle]

Hello,

Take a look at that post.. Maybe it'll help
http://www.webhostingtalk.com/showth...hreadid=235126

Also make sure that when you go in WHM, go to "TWEAK SETTING" Prevent the user 'nobody' from sending out mail to remote addresses should be UNCHECKED !

Good luck

[snickn]

Make sure there is no limits on mount of emails that can be sent through SMTP, and also the suggestion above.

Also verify that /etc/localdomains does not have msn.com or any other major domains (or domains which aren't hosted on your server) in it.

[SGXchangeNet]

Mail is probably not being delivered due to the lack of a reverse dns record for the mailserver ip.

[insite2000]

We do have limits on e-mails per hour (600 per hour), but I have set our script to sleep 7 (wait 7 seconds) between sending each e-mail to respond to this issue.

We are also not sending by SMTP, we are using MIME::Lite with the send_by_sendmail() option.

The host allows the user "nobody" to send mail.

rammystyle, I read your other post too. Did adjusting the limits fix the problem? Because by the same token, if I adjust my scripts to send fewer e-mails per hour than the 600 the host allows, then I would assume if it fixed it for you, it will fix it for me too....

[ramystyle]

insite2000,

I didn't get any feedbacks from my client so I assume that adjusting the limits fixed the problem! I will let you know if I get anything !

[MotleyFool]

ssh into your server and run

host msn.com

if it returns the right address then you have check /etc/localdomains and /etc/userdomains for msn.com