Link to home
Start Free TrialLog in
Avatar of sunhux
sunhux

asked on

Concerns with rerouting emails from head office's Proofpoint to our exchange server

We plan to have an interim  setup where emails meant for us in our country & HQ (in another country)
has a common (.com instead of .sg & .au) so the plan is to reroute emails from HQ's Proofpoint (which
scan for malware, spam, rules) meant for us to us (via public Internet ) & Proofpoint locally won't
scan further for malware, spam, rules.   Pls share the possible concerns/issues (security & non-security as well):

(I can only think of 2 concerns : can the source from our HQ srvm02.zzzbank.com.au be spoofed either by
 IP & FQDN?  & while forwarding via Internet, can it be altered/injected?  we don't plan to set up a site to
 site VPN between our HQ & us)

eg: header info from a sample email
Received: from smtp.zzzbank.com.au (10.98.2.87) by ZZZWVEXC01ZZ.bbb.com.au
 (10.9.95.37) with zzzzz SMTP Server (TLS) id 24.3.271.0; Wed, 20 Jul 2016
 17:07:22 +0800
Received: from pps.reinject (srvm02.zzzbank.com.au [127.0.0.1])      by
 srvz02.zzzbank.com.au (8.15.0.59/8.15.0.59) with ESMTPS id u6K97Jk3033821
SOLUTION
Avatar of aleghart
aleghart
Flag of United States of America image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial
ASKER CERTIFIED SOLUTION
Avatar of Jian An Lim
Jian An Lim
Flag of Australia image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial