Michael Todd's questions

We were in the process of migrating from Exchange 2007 to Exchange 2010 and hit a brick wall when trying to migrate Public Folders.

After resolving issues with connectivity (and another issue with an old Exchange 2003 server being listed in AD that was causing the replication to fail) it finally appeared that messages were migrating from one server to another. However, we appear to have jumped the gun and ran MoveAllReplicas before the process was complete.

We are now stuck with about 210MB of public folders on the new server from a 7GB public folder store on the old server. The messages appear to be available on the old server since running get-publicfolderstatistics shows that there are messages available.

We have waited several days for the move to continue but we are stuck at 210MB. Is there something we can do to complete the replication so that all of the messages move from the old server to the new server?

If we are running a server that is not attached to the domain, how would I go about adding a domain user to a local group on that server?

We're a relatively small organization (25 users, 9 servers, everything Windows-based) and we've been using tape backup since the beginning; currently we're using Backup Exec to perform the backup.

We've been looking into getting larger devices to store data (NAS) and Backup Exec apparently has a problem with backing up those devices unless they have an O/S installed on them. This got us thinking: do we even need to back up to tape any longer? We have a 7-year data retention schedule, so perhaps we could just use hard drives and (shudder) Windows backup.

Any thoughts on this? Is it reasonable to assume that rotated external drives are adequate for backing up data reliably?

Update: A full back up is about 700 GB. Our daily incremental takes much less (of course).

We are running Exchange 2007 and have been doing so for a few years now with only occasional issues. This morning, however, we are not receiving any inbound (external) e-mail. Internally sent e-mail seems to be fine and we can send e-mail out, but nothing is coming in from any domain.

We've rebooted the mail server as well as our domain controller and that seems to have had no effect.

Any ideas about what we should look for to resolve this?

UPDATE: I telnetted into the server and found that the server responds with 452 Insufficient system resources when I perform the MAIL FROM command. We appear to have plenty of disk space and have recently rebooted so memory isn't an issue. Still not working, though.

FURTHER UPDATE: We disabled the Back Pressure threshold as one poster suggested and we are no longer getting the 452 error, but we're still not receiving any e-mails. Perhaps things are backed up at the moment; I'll check again in a little bit to see if things are moving along.