Educause Security Discussion mailing list archives
Re: SMTP Outbound
From: "Ejike, Emechete C." <EEjike () ODU EDU>
Date: Thu, 13 Feb 2014 20:33:31 +0000
We block outbound SMTP except for the Central IT mail gateways. All other approved distributed department mail servers all relay through the University mail gateways. In addition, we also enable port 25 mass mailing block filters on our desktops using Mcafee antivirus agent policies. Eme Ejike ITS Security Operations Old Dominion University ________________________________________ From: The EDUCAUSE Security Constituent Group Listserv [SECURITY () listserv educause edu] on behalf of Ken Connelly [Ken.Connelly () UNI EDU] Sent: Thursday, February 13, 2014 9:09 AM To: SECURITY () listserv educause edu Subject: Re: [SECURITY] SMTP Outbound We don't restrict outbound tcp/587. No issues of which I am aware. - ken On 2/13/14, 7:46 AM, Di Fabio, Andrea 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 <mailto:rhenry () scu edu> 408-554-5554 http://www.scu.edu/is/secure
-- - Ken ================================================================= Ken Connelly Associate Director, Security and Systems ITS Network Services University of Northern Iowa email: Ken.Connelly () uni edu p: (319) 273-5850 f: (319) 273-7373 Any request to divulge your UNI password via e-mail is fraudulent!
Current thread:
- Re: SMTP Outbound, (continued)
- Re: SMTP Outbound Childs, Aaron (Feb 12)
- Re: SMTP Outbound Tim Fairlie (Feb 12)
- Re: SMTP Outbound Kevin Manuel (Feb 12)
- Re: SMTP Outbound Will Froning (Feb 12)
- Re: SMTP Outbound Ken Connelly (Feb 12)
- Re: SMTP Outbound Dexter Caldwell (Feb 12)
- Re: SMTP Outbound Dexter Caldwell (Feb 12)
- Re: SMTP Outbound Francisco PĂ©rez (Feb 13)
- Re: SMTP Outbound Dexter Caldwell (Feb 12)
- Re: SMTP Outbound Di Fabio, Andrea (Feb 13)
- Re: SMTP Outbound Ken Connelly (Feb 13)
- Re: SMTP Outbound Ejike, Emechete C. (Feb 13)
- Re: SMTP Outbound Robert Henry (Feb 13)
- Re: SMTP Outbound Derek Diget (Feb 14)
- Re: SMTP Outbound Ken Connelly (Feb 13)
- Re: SMTP Outbound Childs, Aaron (Feb 12)