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Requested #550 Relaying denied. ##

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Requested #550 Relaying denied. ## - 27.May2013 1:24:34 AM   
khuyenht

 

Posts: 11
Joined: 9.May2011
Status: offline
Hi everyone,
I get an trouble with sending an email.
Delivery has failed to these recipients or distribution lists:
receiver@abc.com
An error occurred while trying to deliver this message to the recipient's e-mail address. Microsoft Exchange will not try to redeliver this message for you. Please try resending this message, or provide the following diagnostic text to your system administrator.
The following organization rejected your message: Requested.
________________________________________
Sent by Microsoft Exchange Server 2007

Diagnostic information for administrators:
Generating server: ex-hub01.xyz.com
receiver@abc.com
Requested #550 Relaying denied. ##
Original message headers:
Received: from mb06.xyz.com ([xxxx::xxxx:xxx:xxxx:xxx]) by ex-hub01.xyz.com
([::1]) with mapi; Mon, 27 May 2013 11:24:47

Could you please explain why i can not send email ?
Thank so much for your support!
Post #: 1
RE: Requested #550 Relaying denied. ## - 27.May2013 1:32:47 AM   
mohammed.yusuf

 

Posts: 96
Joined: 28.Sep.2011
From: Lancashire
Status: offline
It is usually happens when ISP blocks outgoing mail server to prevent SPAM. If you are getting 550 relay denied error message it means outgoing mail server can not verify who you are and will not allow you to send mail.

(in reply to khuyenht)
Post #: 2

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