554 5.4.4 Smtpsend.dns.mxloopback; Dns Records For This Domain Are Configured In A Loop'
I'm in the process of merging an office with SBS2003 with one with SBS2008. Yeah, that's how it was set up already.
DNS records for this domain are configured in a loop. I have a situation where I'm trying to get a test Exchange box to run along side of my other e-mail (which is in another directory) and I can now send e-mail to external hosts fine, but when I try to send from something like Hotmail to the new e.
#554 5.4.4 Smtpsend.dns.mxloopback Dns Records For This Domain Are Configured In A Loop ##rfc822
NDR 554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop July 14, 2015. Case 1: In many cases, “#554 5.4.4 SMTPSEND.DNS.MxLoopback; DNS records for this domain are configured in a loop ##” might have been the outcome of the exchange CAS being configured to use an external DNS server (a DNS server that resolves external hosts).
I think I've cracked it though. These were/are the Accepted Domains settings.Company1.com, Authoritive, Default:FalseCompany2.com, External Relay, Default:FalseCompany1.local, Authoritive, Default:TrueE-mail Address Policies was set like this.Company1.com, Priority:1, Applied:TrueCompany2.com, Priority:2, Applied:TrueDefault Policy, Priority:Lowest, Applied:TrueThose didn't work. Changing them to this.Company2.com, Priority:1, Applied:TrueCompany1.com, Priority:2, Applied:TrueDefault Policy, Priority:Lowest, Applied:Truedidn't work either, butCompany1.com, Priority:1, Applied:TrueDefault Policy, Priority:Lowest, Applied:TrueSeems to have fixed things.I'm still wondering why swapping the priority order didn't work but hey.Thanks for your help.