FB: BTFreeBusy Server Warning: access attempted by unidentified requestor (4288944)

Issue

The following error is generated on the Domino console of the Notes Integration server. This is due to configuration issue with the Coexistence environment relating to Freebusy.

 BTFreeBusy Server Warning: access attempted by unidentified requestor

Solution

The following notes.ini parameter on the Coexistence server needs to be properly configured with an Exchange account or migrated Exchange account

BTCOEX_DEFAULT_FB_ACCESS_ACCOUNT=

This can be referenced in the Comprehensive User's Guide for Coexistence.

It should also be noted that the SMTP address listed here must exactly match the Internet Address for this particular account as listed in the Domino Directory or Exchange Domino Directory otherwise this error may still be generated.