Forum E-mails not sent

[محروم.كوم]

Greetings,

I've installed vb 4.0.2 in April, and php sendmail worked perfectly. (activation e-mails, etc) I've intalled 4.0.5 last week and dont't have any e-mail got. Anyway my site is in a test phase, so I haven't tested outgoing mails for 2 months, and now I don't know whether it is a vb or a mail server configuration problem.

I've tried diagnostics:

SMTP:localhostsendmail_from:Nonesendmail_path:/usr/sbin/sendmail -t -i

I have my webmaster's e-mail in admincp and in config.php so I don't know if "sendmail_from: None" above is okay or not.

Though diagnostics says "no errors were returned..." I don't get any sent out mail to any test mailbox. And no error messages.

If I turn on -f parameter on, in E-mail settings, then I get back the test e-mail as follows:

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:

xxxxxx@xxxxxx
Mail sent by user nobody being discarded due to sender restrictions in WHM->Tweak Settings

------ This is a copy of the message, including all the headers. ------

Return-path:
Received: from nobody by secure.webspacehost.com with local (Exim 4.69)
(envelope-from )
id 1Oal5A-0005Fn-9F
for xxxxxxxxxxxx@xxxxxxxxxxxx; Mon, 19 Jul 2010 02:48:12 -0500
To: xxxxxxxxxxxxx@xxxxxxxxxxxx

Subject: vBulletin Email Test (With -f Parameter)
From: "[email protected]"
Message-ID:
MIME-Version: 1.0
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 8bit
X-Priority: 3
X-Mailer: vBulletin Mail via PHP
Date: Mon, 19 Jul 2010 02:48:11 -0500

You are receiving this email because your email address was entered as an email test at xxxx.

The first step of this email test script has been completed. However, a formatting test is still necessary:

A paragraph break.
A single line break.

Another paragraph break.
Another single line break.
Another single line break.

If the above lines look correct, you are finished. The email features on your server are setup correctly.
If this email is run together on one line, there is possibly a configuration error with your mail server. Please ensure it is configured correctly.

The only hint could be this Mail sent by user nobody being discarded due to sender restrictions in WHM->Tweak Settings

Can anyone help me what this could be? Is it a mail server setting by my host? (Then he changed something after I last tried sendig out e-mails?) Or is it because of the 4.0.5 upgrade? Please send me any useful information, if you have one.

Thanks,

Steve __DEFINE_LIKE_SHARE__