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Reason for Blocked email

Posted on 2012-09-05
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Last Modified: 2012-09-08
I have an external user who seems to be getting their emails  blocked.  

The reason given is:

Remote host said: 554 nm22-vm6.bullet.mail.ird.yahoo.com[212.82.109.225] blocked using ivmSIP. Please see http://dnsbl.invaluement.com/lookup/ [RCPT_TO]

What does this mean?
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Question by:DHPBilcare
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footech earned 2000 total points
ID: 38370583
Did you check the link?
Also http://dnsbl.invaluement.com/ivmsip/

This is a block list of IPs that are considered sources of spam.  If the user isn't sending spam they can follow the instructions in the link you provided to try to get themselves removed from the list.

Is it your system that is blocking the user, i.e. when they try to send mail to you, or are they trying to send elsewhere?  If it's you, then your system must be set up to query this block list as a means to combat spam reaching your users.
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