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Please post the undeliverable error message. This will check further
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Please post the undeliverable error message. This will check further

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Hello Experts,<br />
<br />
I have some outside users getting undeliverable messages that contain this error message. &nbsp;We are using Exchange 2010 and no recent updates have been installed and we are using Forefront security and Barracuda firewall. &nbsp;Our firewall is new but this looks like Exchange?<br />
<br />
Help.<br />
<br />
Thank you<br />
Karen
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Hello Experts,

I have some outside users getting undeliverable messages that contain this error message.  We are using Exchange 2010 and no recent updates have been installed and we are using Forefront security and Barracuda firewall.  Our firewall is new but this looks like Exchange?

Help.

Thank you
Karen

Delivery detail 550.5.7.1 message rejected due to content restrictions

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Various techniques are used to prevent email spam (unsolicited bulk email). No technique is a complete solution to the spam problem, and each has trade-offs between incorrectly rejecting legitimate email (false positives) vs. not rejecting all spam (false negatives) - and the associated costs in time and effort. Anti-spam techniques can be broken into four broad categories: those that require actions by individuals, those that can be automated by email administrators, those that can be automated by email senders and those employed by researchers and law enforcement officials.