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Next version of Exchange and Single Label Domain (SLD) policy under review

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The_Exchange_Team
Platinum Contributor
Jan 27, 2009

EDIT 10/27/2009: Please see the updated statement on this subject here.

Please be advised that Single Label Domain (SLD) support in the next version of Exchange is under review.

In February 2008 we announced that Exchange 2007 would be supported on an SLD. At the same time we announced that the next version of Exchange would not be supported on an SLD. 

This policy is now under review and it may be that the next version of Exchange will be supported on an SLD. The Exchange product team's view continues to be that SLDs are not a recommended configuration, and that customers should fully evaluate how remaining on an SLD impacts  their environment.  Anyone who is currently planning on migrating their SLD to a Fully Qualified Domain Name (FQDN) only because of the February 2008 announcement should also take into consideration that the policy is being re-evaluated. We expect to make the decision public in the next few months.

- Ed Beck

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13 Comments

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  • Deleted's avatar
    Deleted
    Jan 28, 2009
    I have installed Exchange 2007 in SLD environments, but when I tried to upgrade those environments to SP1, it would not allow me to continue because of the SLD. So it appears that it already does not support SLD environments.
  • Deleted's avatar
    Deleted
    Jan 28, 2009
    I'm curious to know how many AD environments Microsoft estimates to be SLD.
  • Deleted's avatar
    Deleted
    Jan 27, 2009
    Please continue this review. Many small sites have migrate up from SLD 5.0 and 5.5 environements and don't want to do a full domain migration.
    Also please look into backup (with tapes)  solution. Small sites with only one Exchagne server and a couple of other servers (DC file and print servers) don't want to go the DRM route, don't have second sites to replicate with.
    Quick and dirty NTBACKUP was great for disaster recovery and comitting logs in in a crisis. Tapes are cheap over 10 or 15 years, and I have fairly frequently been able to restore old data from Exchange 5.5 or 2000 backups onto reconstructed systems (build a single server and restore your tape fromt he drive you kept and the old CDs)
    What's your suggestion for getting back an e-mail deleted today in 8 years time? Buy a very expensive archive system? Small shops are not going to do that.
    They are not going to put their data online either.
    Beware of reducing basic functionality - small companies grow!