Problem with receiving emails

[eXpirium]

I have a problem with receiving emails for new accounts I create in WHM.
I'm able to send emails, which means that all settings are good, but when I'm not able to receive any email. When I look the list of errors, I see this:

cyber@talasanje.com R=lookuphost T=remote_smtp: SMTP
error from remote mail server after RCPT TO::
host talasanje.com [64.18.132.194]: 550-Verification
failed for \n550-Called: 64.202.166.12\n550-Sent:
RCPT TO:\n550-Response: 553 sorry,
relaying denied from your location [64.18.132.194]
(#5.7.1)\n550 Sender verify failed

Spamassasin Spam Filter and BoxTrapper Spam Trap are disabled.

Although, some of domains on my server are able to send and receive emails, other are not.

Any idea how to fix it?

[eXpirium]

More confusion

From certain servers, I'm able to receive emails, from other - not.

Any help? I'm really confused, and a newbie, so help me deal with this, please

Sending from one address gives me this:

Unknown user: podrska@expirium.com
Original message follows...

Sending from other:

2007-02-17 15:46:11 1HIQpd-0007ew-TE <= jsladja@nadlanu.com H=(mta2.telekom.yu) [*.*.*.*] P=esmtp S=34576 id=45D714B2.000008.01436@JSLADJA
2007-02-17 15:46:11 1HIQpd-0007ew-TE => podrska <podrska@expirium.com> R=virtual_user T=virtual_userdelivery
2007-02-17 15:46:11 1HIQpd-0007ew-TE Completed

Am I stupid, or what?

[Lyttek]

(#5.7.1)\n550 Sender verify failed

That's your problem. Disable 'Use callouts to verify the existence of email senders.' in Exim Configuration Editor.

[eXpirium]

Here are screenshots of my settings for exim (see attachments).

Should I restart cPanel, and if yes - how to do it? Dummy questions, but as I've told, I'm a newbie

[eXpirium]

I've changed my OS from Fedora 6 to CentOS (because cPanel doesn't support Fedora 6). Ok. Installed everything, updated scripts, etc... Mail problems are solved. ALMOST!

My main email address is the one from following copy/paste:

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:

cyber@talasanje.com
SMTP error from remote mail server after RCPT TO:<cyber@talasanje.com>:
host talasanje.com [64.18.132.194]: 550-Verification failed for <root@host.expirium.com>
550-unrouteable mail domain "host.expirium.com"
550 Sender verify failed

I receive this kind of messages for every notification, but I receive them to the same address that is quoted as 'failed'!!! Use callouts to verify the existence of email senders is unchecked.

Dns resolved host.expirium.com to 208.53.170.150 -> domain is routeable. It's a full hostname of my box.

Any suggestions?

[brendanrtg]

Is "host.expirium.com" resolvable? Is there an A entry for that host in question?

[eXpirium]

Is "host.expirium.com" resolvable? Is there an A entry for that host in question?

It's resolvable, and yes, ther is an A entry.

host - 14400 - A - 208.53.170.150

[eXpirium]

I've just added another A entry:

host.expirium.com - A - 127.0.0.1

Mistake or not? We'll see