Re: Outbound E-mail rate limiting for users

["Gioia, Matthew P." <MGioia () STLCC EDU>]

We do this and have exceptions for accounts that do mass communications.
It requires a bit of work to unclog the queues when an account is
compromised, but as you say, it saves us from winding up on as many
blacklists. I would imagine identifying those accounts/individuals would
be a bit more difficult at bigger/less centralized institutions. 

 

Matthew Gioia

Network Security Analyst

Technology and Educational Support Services

St. Louis Community College

 

From: The EDUCAUSE Security Constituent Group Listserv
[mailto:SECURITY () LISTSERV EDUCAUSE EDU] On Behalf Of Kincaid, Chris
Sent: Wednesday, December 12, 2012 5:54 PM
To: SECURITY () LISTSERV EDUCAUSE EDU
Subject: [SECURITY] Outbound E-mail rate limiting for users

 

Colleagues,

 

Do any of you limit the amount of outbound e-mails a user can send in a
given time?  The reason I ask is we are attempting to throttle outbound
messages to cut off before we send out 75k spam messages in an
afternoon, and then get blacklisted.  We use proofpoint, and they have a
patch to throttle down outbound users after a threshold is crossed. I
just don't want to set it too tight and cut off anyone legitimately
sending out messages

Thanks,

 

Chris Kincaid, MBA

Associate Director, Enterprise Services|Information Technology Services

 

1200 East Colton Avenue |Redlands, CA 92373-0999