Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!

SMTP error from remote mail server after MAIL

Discussion in 'E-mail Discussion' started by Noe Meza H, Sep 4, 2012.

  1. Noe Meza H

    Noe Meza H Registered

    Sep 4, 2012
    Likes Received:
    Trophy Points:
    cPanel Access Level:
    Reseller Owner
    I'm trying to send an email from my webmail and shows me an error this error occurs every time I send all my emails in such domains:,, this is the message shown me (I should mention that the emails if they come to my tray but can not be sent)

    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:
    SMTP error from remote mail server after MAIL FROM:<> SIZE=1798:
    host []: 550 OU-001 (BAY0-MC4-F27) Unfortunately, messages from 184.22.249.XX weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to
    ------ This is a copy of the message, including all the headers. ------
    Return-path: <>
    Received: from localhost ([]:51476)
    by with esmtpa (Exim 4.77)
    (envelope-from <>)
    id 1T8d6h-0006Go-4e
    for; Mon, 03 Sep 2012 15:18:58 -0500
    Received: from ([]) by
    (Horde Framework) with HTTP; Mon, 03 Sep 2012 15:18:51 -0500
    Message-ID: <>
    Date: Mon, 03 Sep 2012 15:18:51 -0500
    Subject: prueba 4
    MIME-Version: 1.0
    Content-Type: text/plain;
    Content-Disposition: inline
    Content-Transfer-Encoding: 7bit
    User-Agent: Internet Messaging Program (IMP) H3 (4.3.11) 
  2. Infopro

    Infopro cPanel Sr. Product Evangelist Staff Member

    May 20, 2003
    Likes Received:
    Trophy Points:
    cPanel Access Level:
    Root Administrator

    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. pwhjenny

    pwhjenny Well-Known Member

    Aug 31, 2012
    Likes Received:
    Trophy Points:
    cPanel Access Level:
    Root Administrator

    Yes, clearing your Ip address from blacklist would be the permanent solution for the issue. But if you do not want to wait for 24 to 48 hours till the Ip address get white listed you can change your mail server Interface ip address from your mail server configuration file and setup a whitelisted ip address as your mail servers main ip address.

    First check if you have more than one IP address on your server if yes then check the ip address for blacklist in If it is not listed then use the ip address.

    If you are using exim then you can go through the following steps :

    vim /etc/exim.conf

    search for remote_smtp here you will find Interface = ip address

    Replace a ip address here with your new ip address.

    /etc/init.d/exim restart

    It will fix the issue.
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
    #3 pwhjenny, Sep 6, 2012
    Last edited: Sep 6, 2012

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice