On Tue, 2006-03-14 at 20:29 -0600, Les Mikesell wrote: > These days a lot of spam is sent to the highest valued MX record > instead of the preferred one specifically to avoid spam filtering. > There is really not a lot of value in having a backup MX because > the sending relays will queue for you anyway, but if you do have > one you should run the same filtering as your primary system. > Well I opted for changing the MX record to correct our violation of RFC1035. Also, I removed the second MX record. I think I'll be retesting the whole system over the next few days to see if this doesn't fix some problems. Thanks again to everyone who discussed this issue with me.