Microsoft Exchange Server 2003 SP2 - 6.5.7638
Out of office used to work, now getting reports that roughly 6 months ago it stopped working for external emailers. So internally it works ok, but external incoming emails do not receive the automatic OOO reply.
The option is set in OWA by turning on the “I'm currently out of the office” feature in options menu.
This is happening to multiple users (not sure about all, but certainly the 3 I've tested).
Other mail flowing ok AFAIK.