This article was previously published under Q151214
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A set of log files is created in the \Mdbdata subdirectory of MicrosoftExchange Server when you set Sending and Delivering diagnostics logging foreither the private and public information stores to Maximum.
The log files have the following format:
Dlv.log Snd.log Dlvxxxxx.log Sndxxxxx.log
where xxxxx starts with 00001 and is incremented as necessary. The Dlv.logand Snd.log are the last logs created. These logs contain XAPI propertiesas manipulated between the MTA and the store. These logs are not meant tobe used by mail system administrators and are only useful fortroubleshooting and when requested by Microsoft support or developmentpersonnel.
It is safe to delete these log files at any time
WARNING: The store transaction logs names have the following format:Edb.log, Edb00000.log. When you delete the trace logs, be careful not todelete any transaction logs or you may lose the ability to recover afull store if a backup needs to be restored.