We are planning to switch from one spam filter to another spam filter, our existing settings are internet>spam filter> edge server> CAS/HUB/mailbox server, would you kindly assist to know that what are steps I should follow to perform the activity considering minimum downtime.
1. I will change receive connector in EDGE server for new spam filter
2. I will change mx pointer to new spam filter.
What other steps do I need to follow.