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Exchange blocking mail

crp0499
crp0499 asked
on
Medium Priority
1,961 Views
Last Modified: 2012-05-11
The sender is usrisk.com, an insurance company.  the recipient is MY exchange server that I manage.  The sender sends the email to my user, and the sender gets the message below.

any ideas?

the recipient is valid.  the sender is in my whitelist by IP and domain.

thanks

cliff


-----Original Message-----
From: Mail Delivery System [mailto:mailer-daemon@electric.net]
Sent: Tuesday, April 26, 2011 9:06 AM
To: Elizabeth Wafer
Subject: Mail delivery failed: returning message to sender

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:

 bam@domain.com
   SMTP error from remote mail server after end of data:
   host domain.com [65.70.xxx.xx]: 554 5.1.0 Sender denied
Comment
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Shreedhar EtteTechnical Manager
CERTIFIED EXPERT
Top Expert 2010

Commented:
Does Exchange server have any antispam software?

What is the version of the Exchange?
Check the whether sender uses any encryption method such as TLS protocol at their end
crp0499CEO

Author

Commented:
exchange 2010 running the b uilt-in antispam software.  this sender can send to other users in the same domain. i'm going to check the recipients junk mail list
Technical Manager
CERTIFIED EXPERT
Top Expert 2010
Commented:
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crp0499CEO

Author

Commented:
it wasnt in senderfilteringm, but that got me to thinking.  the recipient had it blocked in her own block list
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