Archive

NDR 554 5.4.4 SMTPSEND.DNS.MxLoopback A little bit of history on why I was receiving this DNS loop error NDR email (NDR 554 5.4.4 SMTPSEND.DNS.MxLoopback). We have a Hybrid solution with Exchange 2013, DirSync and Office 365. I created a new Office365 user from my on premise Exchange server and Dirsynced the account to the cloud …

Post Exchange mailbox database cleanup to Office 365 My initial issue was thus. I had done a cut migration from Exchange 2013 to Office 365. Everything was working fine and I had kept my existing server intact to be used in conjunction with DirSync for a Hybrid solution. The existing on premises server was still …

My Exchange 2013 Upgrade to SP1 This is my journey in upgrading our on premises Exchange 2013 server running CU1 to SP1. Since my install of CU1 was a little bumpy I made sure to do all the initial preparation. SP1 has Schema/Ad/Domain changes so make sure deal with them first. Download SP1 and extract …

We (itgroove) have been working with a lot of clients that are moving parts of their infrastructure to Office365.  For some clients it really is a “no-brainer” and there is no discussion at all about 365 vs on premise servers.  For other clients it is a much more complex discussion.  So I thought it might …