Yes, but. I'd bet the big boys don't have that second mx pointing directly to an exchange server, which is what the poster was doing and why we suggested he remove it. If he has more than one cuda, then by all means, a second mx would be fine.
________________________________ From: Michael B. Smith [mailto:mich...@theessentialexchange.com] Sent: Fri 1/23/2009 1:13 PM To: MS-Exchange Admin Issues Subject: RE: stopping a spammer And the "really big boys" have many MX records with different weights that give out different values depending on the source IP address. I remember when Yahoo's MX-record list exceeded 512 bytes and broke SO much software... However, somewhat in agreement with Jason - it used to be that you might depend on your secondary MX and that everyone would honor MX records. That is no longer true. Regards, Michael B. Smith, MCITP:SA,EMA/MCSE/Exchange MVP My blog: http://TheEssentialExchange.com/blogs/michael I'll be at TEC'2009! http://www.tec2009.com/vegas/index.php -----Original Message----- From: Don Andrews [mailto:don.andr...@safeway.com] Sent: Friday, January 23, 2009 1:07 PM To: MS-Exchange Admin Issues Subject: RE: stopping a spammer Not the case here - we have 2 internet feeds at separate datacenters/carriers - each has a pair of equally weighted (via MX) relays - and the preferred route has the preference set in the MX to enable that. -----Original Message----- From: Jason Gurtz [mailto:jasongu...@npumail.com] Sent: Friday, January 23, 2009 5:57 AM To: MS-Exchange Admin Issues Subject: RE: stopping a spammer > Then I lose my failover to the mail server (direct connect) > in case the 'cuda goes offline. The days of the "backup MX" are long gone. And it's really no loss-think about it: if your MX is unavailable, senders will queue mail (typically for several days) until it comes back online and then resend. Email is not a real time communication medium; that's what IM is for. If you really want a backup, get a second 'cuda and put a load balancer in front. ~JasonG -- ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~ ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja ~
