The specifications for SPF (Sender Policy Framework) require only one TXT record.If you already have a TXT record with SPF information set up for your domain name, you will need to customize it following specific syntax rules.In today's business culture, it's not uncommon for companies to merge or for one to buy another.One day, you're an administrator taking care of your Active Directory (AD) domain and Microsoft Exchange Server organization, and the next thing you know, you have to figure out a way to merge two companies. This two-part series explores some of the ins and outs of an AD and Exchange Server migration.In this article, we will focus on what starts to happen after Day One.

Merging sites allows you to reap the SEO benefits while you funnel the link juice and consolidate promotional efforts for consistent branding.If you need to authorize a list of IP addresses that can send mail for your domain name, use the mechanism ‘ip4’ and ‘ip6’ respectively and separate them with spaces, for example:“v=spf1 ip.233.167.99 ip80::0C:417A -all" IP addresses of the same class may be published with a slash, i.e., 192.168.1.14/32, like "v=spf1 ip2.168.1.0/38 ip80::0C:417A/96 -all" 3.Allow a third-party service to handle mail for your domain.Consolidating your websites is simpler than maintaining multiple sites.Not to mention, the two may compete with each other for ranking unless they have very distinct business lines and keywords.