This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

why can't I send emails to .com email addresses?

more options

When I try to email a .com address the following warning fires back. I can receive emails from this address but not reply to them either

The original message was received at Thu, 27 Feb 2014 13:42:25 +1300 from 121-74-19-81.telstraclear.net [121.74.19.81]

  ----- The following addresses had permanent fatal errors -----

<admin@mekongbaby.com>

   (reason: 550 No such user)
  ----- Transcript of session follows -----

... while talking to bsmtp.hosts.net.nz.: >>> RCPT To:<admin@mekongbaby.com> <<< 550 No such user 550 5.1.1 <admin@mekongbaby.com>... User unknown


Reporting-MTA: dns; lefty.hosts.net.nz Received-From-MTA: DNS; 121-74-19-81.telstraclear.net Arrival-Date: Thu, 27 Feb 2014 13:42:25 +1300

Final-Recipient: RFC822; admin@mekongbaby.com Action: failed Status: 5.1.1 Remote-MTA: DNS; bsmtp.hosts.net.nz Diagnostic-Code: SMTP; 550 No such user Last-Attempt-Date: Thu, 27 Feb 2014 13:42:31 +1300


Return-Path: <admin@prophetsrock.co.nz> Received: from [192.168.1.15] (121-74-19-81.telstraclear.net [121.74.19.81]) (authenticated bits=0) by lefty.hosts.net.nz (8.13.8/8.13.8) with ESMTP id s1R0gP0C017588 for <admin@mekongbaby.com>; Thu, 27 Feb 2014 13:42:25 +1300 Message-ID: <530E89F4.1010800@prophetsrock.co.nz> Date: Thu, 27 Feb 2014 13:42:28 +1300 From: Jo <admin@prophetsrock.co.nz> Organization: Prophet' Rock Wines Ltd User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: admin@mekongbaby.com Subject: hi linda Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit

When I try to email a .com address the following warning fires back. I can receive emails from this address but not reply to them either The original message was received at Thu, 27 Feb 2014 13:42:25 +1300 from 121-74-19-81.telstraclear.net [121.74.19.81] ----- The following addresses had permanent fatal errors ----- <admin@mekongbaby.com> (reason: 550 No such user) ----- Transcript of session follows ----- ... while talking to bsmtp.hosts.net.nz.: >>> RCPT To:<admin@mekongbaby.com> <<< 550 No such user 550 5.1.1 <admin@mekongbaby.com>... User unknown Reporting-MTA: dns; lefty.hosts.net.nz Received-From-MTA: DNS; 121-74-19-81.telstraclear.net Arrival-Date: Thu, 27 Feb 2014 13:42:25 +1300 Final-Recipient: RFC822; admin@mekongbaby.com Action: failed Status: 5.1.1 Remote-MTA: DNS; bsmtp.hosts.net.nz Diagnostic-Code: SMTP; 550 No such user Last-Attempt-Date: Thu, 27 Feb 2014 13:42:31 +1300 Return-Path: <admin@prophetsrock.co.nz> Received: from [192.168.1.15] (121-74-19-81.telstraclear.net [121.74.19.81]) (authenticated bits=0) by lefty.hosts.net.nz (8.13.8/8.13.8) with ESMTP id s1R0gP0C017588 for <admin@mekongbaby.com>; Thu, 27 Feb 2014 13:42:25 +1300 Message-ID: <530E89F4.1010800@prophetsrock.co.nz> Date: Thu, 27 Feb 2014 13:42:28 +1300 From: Jo <admin@prophetsrock.co.nz> Organization: Prophet' Rock Wines Ltd User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.3.0 MIME-Version: 1.0 To: admin@mekongbaby.com Subject: hi linda Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit

All Replies (2)

more options

It happen only to that particular email id or all email id's ?

Are you using proxy settings?

which version of Thunderbird are you using?

Try in Thunderbird safemode

iamjayakumars modificouno o

more options

It happen only to that particular email id or all email id's ?

Are you using proxy settings?

which version of Thunderbird are you using?

Try in Thunderbird safemode