Re: SMTP Outbound

[Robert Henry <rhenry () SCU EDU>]

Hi,

We pretty much allow everything out, I'm trying to reel that in.  Thanks
for the tip to keep an eye on 587 and see if there is traffic that looks
abusive.
--Bob

--
Robert Henry, CISSP
Chief Information Security Officer
Santa Clara University
rhenry () scu edu
408-554-5554
http://www.scu.edu/is/secure

Security Reminder: Always protect your online credentials and never share
your login information with others.  SCU will NEVER request your
credentials or login ID via email. Any and all email messages that do
request this or other personal information are fraudulent.  You should mark
it as SPAM and block the sender. Please contact the IT service center at
(408) 554-5700 if you have concerns or questions.


On Thu, Feb 13, 2014 at 5:46 AM, Di Fabio, Andrea <adifabio () nsu edu> wrote:

> We only allow 25 in/out to/from our email servers but we do allow 587 out
> as we found that many email clients, especially on mobile devices, will use
> this port. So the new question is, are you allowing TCP 587 out of your
> network without restriction and have you seen any issue with doing that? We
> have not seen any issues thus far.
>
>
>
> Andrea Di Fabio, CISO
>
> Director, IT Security and Network
>
> Norfolk State University
>
> Office of Information Technology
>
> Marie V. McDemmond Center for Applied Research, Rm 401M
>
> 555 Park Avenue, Suite 401
>
> Norfolk, Virginia 23504
>
> 757-823-2896 Office
>
> 757-823-2128 Fax
>
>
>
> NSU email communication is subject to permanent archival, it is covered
> under the Freedom of Information Act (FOIA), and may be partially or fully
> disclosed.
>
>
>
> *From:* The EDUCAUSE Security Constituent Group Listserv [mailto:
> SECURITY () LISTSERV EDUCAUSE EDU] *On Behalf Of *Robert Henry
> *Sent:* Wednesday, February 12, 2014 5:35 PM
> *To:* SECURITY () LISTSERV EDUCAUSE EDU
> *Subject:* [SECURITY] SMTP Outbound
>
>
>
> This is a simple, non-scientific poll, please respond off-list and I will
> share the results with the list.
>
>
>
> Do you block SMTP traffic, port 25, outbound at your border firewall?
>
>
>
> Thanks!
>
> --Bob
>
>
> --
> Robert Henry, CISSP
> Chief Information Security Officer
> Santa Clara University
> rhenry () scu edu
> 408-554-5554
> http://www.scu.edu/is/secure