SP1 went RTM today which means it will be widely available soon. According to the Microsoft server division blog, the service pack will be available to Microsoft's TechNet and MSDN subscribers, as well as to Microsoft volume licensing customers, on Feb. 16, 2011. It will be generally available via the Microsoft Download Center and Windows Update on ......

---

During a migration recently, we came across another internal mail routing issue. The symptoms were identical to my previous post about Exchange internal mail routing. Mail was flowing from 2010 to 2003, from 2010 to the internet, but not from 2003 to 2010. I went through the normal check list looking at permissions, DNS, and the routing group connectors. ......

---

During a recent Exchange 2010 migration, we encountered issues with mail-enabled groups. At first we thought it was a SMTP related issue as no 2010 mailbox could send mail to any of the groups. The mail would just disappear. No NDR was delivered, it wasn’t in the queue, it simply vanished. Because of this issue, we decided to go ahead and convert all ......

---

Recently for a customer with a rather large exchange environment, we implemented multiple CAS Arrays across various sites in the network. The customer decided that all external access to OWA would come into once Internet entry point and that Array would proxy OWA request to the other CAS Arrays to retrieve the user mailbox. We found out quickly that ......

---

I ran into a real head scratcher this week. While migrating a very public folder dependant organization, I couldn’t access public folders through OWA. I had full public folder functionality in the Outlook client, only OWA was affected. The environment was still in a hybrid state with production Exchange 2003 servers in the organization as well as DR ......

---

We recently switched over a client’s small infrastructure to Small Business Server 2008. SBS 2008 has SQL 2008 and Exchange 2007 imbedded. The customer wanted to keep the same internal and external FQDN names used previously with Exchange 2003. I had them purchase a SAN certificate with all the standard names in an Exchange 2007 or 2010 environment. ......

---

Microsoft introduced TCP/IP Auto tuning with Vista and Windows 2008 server. Its also a part of Windows 7 and 2008 R2. This feature resizes IP packets which can improve network performance. Older network devices, however, like Cisco PIX firewalls do not support Auto tuning and can cause connection issues. I had a client that was getting email undeliverable ......

---

One of the great sessions I sat in on at Tech Ed this week was stretching a Windows 2008 R2 Hyper-V Failover Cluster across sites. With this ability, you could actually implement a Hyper-V cluster where you could migrate or even Live Migrate VMs across sites. With this area’s propensity for Hurricanes, this will be a very popular topic for me over the ......

---

Today while moving mailboxes between Exchange 2003 and Exchange 2010, I hit an issue with a couple of mailboxes. These mailboxes all popped access denied errors or more exactly: Insufficient Access Rights to perform the operation. The cause was similar to the mail flow issue in that inheritable permissions were not turned on for the user object in Active ......

---

While performing the initial Exchange 2010 deployment for a customer migrating from Exchange 2003, I ran into an issue with mail flow between the two environments. The Exchange 2003 mailboxes could send to Exchange 2010, as well as to and from the internet. Exchange 2010 mailboxes could send and receive to the internet, however they could not send to ......

---