Google Outbound Services Configuration Guide - Manual (Page 19)

20 Outbound Services Configuration Guide
For Microsoft Exchange 2000, or Microsoft Exchange 2003 without Private
Outbound DNS, different instructions apply depending on whether your network
includes a single mail server, or multiple linked mail servers. If you are using a
single server, see “Microsoft Exchange 2000/2003 Single Server (Smarthost
method)” on page 47. If you are using multiple linked servers, see “Microsoft
Exchange 2000/2003 Multi-Server (Smarthost method)” on page 55.
If you are using Microsoft Exchange 2007 and do not want to use Private
Outbound DNS, different instructions apply depending on whether your network
includes an Edge Server. If you are using an Edge Server, see “Microsoft
Exchange 2007 with an Edge Server (Smarthost method)” on page 83. Otherwise,
see “Microsoft Exchange 2007 without an Edge Server (Smarthost method)” on
page 65.
If you are using Small Business Server 2000, you can use the instructions in
“Microsoft Exchange 2000/2003 Single Server (Smarthost method)” on page 47.
Small Business Server 2003 requires more specific configuration; see “Microsoft
Small Business Server 2003” on page 103.
Optional: Configure SPF Records for Outbound Services
If you use SPF records, set up SPF records for Outbound Services as well.
Setting up SPF DNS entries will minimize non-deliveries through outbound.
Add the following record to your DNS service:
[your domain]. IN TXT "v=spf1 include:spf.[your domain] -all"
where [your domain] is the domain you use for outgoing mail. Note the trailing
period in your domain.
Then add the following TXT Record to spf.[your domain] :
spf.[your domain]. IN TXT "v=spf1 ip4:207.126.144.0/20
ip4:64.18.0.0/20 ip4:74.125.148.0/22 ip4:[your IP allocations]
~all"
where [your domain] is the domain you use for outgoing mail, and [your IP
allocations] are the IP addresses of your own mail servers, in CIDR format. For a
list of IP addresses, see IP Ranges in the Administration Guide.
For example, if your domain is electric-automotive.com , add the following two
TXT records:
electric-automotive.com. IN TXT "v=spf1 include:spf.electric-
automotive.com-all"
spf.electric-automotive.com. IN TXT "v=spf1 ip4:207.126.144.0/20
ip4:64.18.0.0/20 ip4:74.125.148.0/22 ip4:[your IP allocations]
~all"
If you need help with more complex SPF records, consult the SPF wizard on the
Open SPF website to find out how to add your servers to the SPF entries
described above:
http://www.openspf.org/wizard.html