Meeting responses stuck in Outbox

[Helen_FG]

I am a new user to Outlook and have been trying to get used to the calendar
(I am used to Lotus Notes). I can accept meeting invitations, and they show
up in my agenda. However, if I take the option 'Send Response Now', the
response gets stuck in my outbox. I can still send normal mail, but the
meeting responses stay stuck until I delete them (meaning that the person who
invited me doesn't know if I've accepted or not). There's probably a setting
somewhere that I've missed, but I'd appreciate some help, please?

 

[Vince Averello [MVP - Outlook]]

What kind of mail server are you using in the office? Also, which version of
Outlook are you using? I'm curious if the response are 'stuck' trying to
find a path to the local mail server or such