16.28.130 and Autodiscover

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Occasional Visitor

Hi,

We are running Exchange 2010 in Hybrid mode with 365.  One of our mac users installed S4B last month (which is great), however since installing, our Exchange server w3vsvc1 log file location has started blowing out to almost 2GB of log files daily (was previously under 100MB).  All entries in the log are autodiscover queries as per below:

 

2020-03-04 00:22:00 192.xxx.yyy.zzz POST /autodiscover/autodiscover.svc - 443 - 10.xxx.yyy.zzz SfBForMac/16.28.130.0000+(Mac+OSX+10.14.4) 401 1 2148074254 0

 

ideally we would like to reduce or limit the autodiscover queries as there seem to be hundreds per second.

 

Thanks