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Reason: 550 #5.1.0 Address rejected user@company.net

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Reason: 550 #5.1.0 Address rejected user@company.net - 8.Dec.2011 12:35:57 AM

abdulbasit01

Posts: 9
Joined: 22.Sep.2011
Status: offline

Hi,

One of my user send an email to another company on different account but same domain. but facing this issue. Can you please help me,

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This is the mail delivery agent at messagelabs.com.

I was unable to deliver your message to the following addresses:

xyz@company.net

Reason: 550 #5.1.0 Address rejected xyz@company.net

The message subject was: ABC - Confirmatio of Instruction to Proceed The message date was: Wed, 7 Dec 2011 19:09:55 +0400 The message identifier was: A7/0C-01390-7128FDE4 The message reference was: server-2.xxxxxxxxxx.com

Please do not reply to this email as it is sent from an unattended mailbox.
Please visit www.messagelabs.com/support for more details about this error message and instructions to resolve this issue.

Your quick response is requested.

Regards,

Bunny

Post #: 1

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RE: Reason: 550 #5.1.0 Address rejected user@company.net - 13.Dec.2011 3:31:10 AM

sgarciabat

Posts: 53
Joined: 30.Jan.2009
Status: offline

If your mail have been rejected in this Server, maybe your public IP or your domain is blacklisted.

Chech your information and try another time.

You can check your IP or domain at pages like Barracuda, MXToolBox, ...

Good Luck

Sgarciabat
www.elcorreoelectronico.com

< Message edited by sgarciabat -- 13.Jan.2012 10:02:07 AM >

(in reply to abdulbasit01)

Post #: 2

RE: Reason: 550 #5.1.0 Address rejected user@company.net - 6.Feb.2012 12:22:11 AM

abdulbasit01

Posts: 9
Joined: 22.Sep.2011
Status: offline

Hi,

I am facing this issue with only one user and only one specific Domain; He can send email to all other domains. Before he was able to send emails on that domain but now he is facing this issue.

Waiting for your guidance.

Thanks,

AB

(in reply to sgarciabat)

Post #: 3

RE: Reason: 550 #5.1.0 Address rejected user@company.net - 23.Feb.2012 3:36:46 AM

infostellar

Posts: 72
Joined: 10.Jun.2009
Status: offline

Have you checked this solution to troubleshoot the relay errors in Microsoft Outlook: http://office.microsoft.com/en-us/outlook-help/troubleshoot-550-553-and-relay-prohibited-errors-HA001112833.aspx

_____________________________

Regards,

Axel Culver
Exchange Server Recovery | Recover Exchange Database

(in reply to abdulbasit01)

Post #: 4