New ExchangeDefender outbound servers

With ExchangeDefender 4.x infrastructure already in place on the inbound servers, we are moving our focus to the implementation of ExchangeDefender 4.x on the outbound servers. The new systems will go into production this weekend, April 5-6, and will feature new IP address relay servers:

outbound1.exchangedefender.com 65.99.255.236
outbound2.exchangedefender.com 65.99.255.232

This is the same IP range that is currently in use so you should not have to make any modifications or changes to your systems. Everything will just work transparently.

If you are currently using SPF, which we do not recommend, you will have to adjust it to include the new IP addresses. For illustration purposes, here is a look at the possible SPF record:

domain.com = “v=spf1 ip4:65.99.255.236 ip4:65.99.255.232 ip4:65.99.192.8 ip4:65.99.192.91 a:outbound.exchangedefender.com -all”

This record will restrict relaying for domain.com to ExchangeDefender outbound servers only (naturally you should include your own IP as well for non-smarthosted deliveries) but the above should get you started.

We don’t expect any issues as the new system has been in beta testing for a few months with no significant problems. Performance, logging, reporting and enforcement functionality that it delivers are far beyond comparison with the current service so we are really looking forward to it!