To continue this. Is there an implementation to allow the user to set this themselves through their email client? like Thunderbird?
As it stands, if a user sends an "Out Of Office" setting in, say Thunderbird, then there Thunderbird needs to be left on the entire time.
Compared to Gmail or Outlook/Exchange this is pretty primitive.
Is there a way for Thunderbird to hook into procmail or some other implementation? Maybe Squirrelmail has this....
This might not have been available when OP posted....