Tony, Your main question has already been answered, but I noticed something in your proposed setup that concerns me.
You state in your diagram that you plan to have the MSE box as the secondary MX record. This would not be a good idea. From experience, we have seen that spammers try the secondary MX first in hopes of finding a server that is not protected by a spam scanner. This obviously would not be what you want to happen. Kris -----Original Message----- From: news [mailto:[EMAIL PROTECTED] On Behalf Of Tony pace Sent: Friday, May 27, 2005 10:05 AM To: users@spamassassin.apache.org Subject: SA Gateway -> MS Exchange -- what if MSE down? we are looking to implement SA in our environment this best describes what we want to do. [SPAM/HAM] --> [ SA GATEWAY] -----------------------------> [MS EXCHANGE] - system wide filtering - all user mailboxes - postfix transport - MX SEC RECORD - MX PRI record the question that was posed --- if the MS Exchange is not accessible (network issue, down for maintenance) -- what happens to the email? My best understanding is the email will be rejected as "mail-server not available", as SA is a filter not an MTA and that Postfix is a check/forwarding agent (not "store" & forward). Would I be correct in assuming, in the event that if MS Exchange was down, in order to "store" mail -- I would need to have a backup MTA with all the users mailboxes replicated? Thanks, Tony
