Mailbox unavailable. The server response was: 5.7.1 Unable to relay

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Hi everyone,
I am getting the below error while sending an email from my .net application.
Please help me..

Error: Mailbox unavailable. The server response was: 5.7.1 Unable to relay

Thanks,
Rajesh

Posted 9-Feb-14 21:56pm

Rajesh Sannidhi

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Kornfeld Eliyahu Peter 10-Feb-14 4:13am

Read here:
http://exchangeserverpro.com/how-to-configure-a-relay-connector-for-exchange-server-2010/

2 solutions

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 1 · 2014-02-09T22:14:00

Solution 1

Refer - Using localhost as mailserver (5.7.1 Unable to relay for xxx)[^] and follow the instructions.

Posted 9-Feb-14 22:14pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Snehasish_Nandy · Answer 2 · 2014-02-09T22:18:00

Solution 2

Refer this[^]

Posted 9-Feb-14 22:18pm

Snehasish_Nandy