Active Directory: Scavenging Best Practices
I recently came across an environment in which an Exchange Bridgehead were queueing Email to remote sites. ESM queue would report, "Could not connecto to destination server in DNS." When performing nslookup on the remote servername name it would fail to produce the record. After manually adding the record, mail flow would resume.
In this instance, records were being scavenged. This was caused by multiple servers in the Domain having scavenging configured and replication delays and possibly unreliable links possibly causing the record to purged.
Scavenging best practices includes only setting scavenging on one server in the domain, otherwise, you can end up with many underlying issues including Active Directory replication problems. In addition, set your servers to be static hosts so that they are not eligible to be scavenged.
James Chong (MVP)
MCITP | EMA; MCSE | M+, S+
Security+, Project+, ITIL
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