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Large number of outgoing blocks

blocks outgoing authentication

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#1 Jody Gosnell

Jody Gosnell
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Posted 12 April 2013 - 08:32 AM

Anyone know what could cause this (see attached file)? This happened for about 2 hours last night and resolved itself on its own.

Attached Files

#2 mheller



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Posted 12 April 2013 - 08:42 AM

Hi jody,

This is caused by some spammer trying to use SMTP AUTH to the Barracuda to attempt to send email outbound. An upcoming firmware should block them after a certain amount of retry failures.

Matthew Willson-Heller
Support Escalation Manager, US

Barracuda Networks Inc.
Phone: +1 408.342.5300 x5346
Fax: +1 408.342.1061
Web: www.barracudanetworks.com