Accept/Decline buttons stripped from Meeting invitation. Can not do out of office.

Posted on 2009-12-22
Last Modified: 2012-05-08
We have Exchange 2003 SP2 enviornment and clients are Outlook 2003.  When sending calander appointment to internal receipient the Accept/Decline buttons are there.  If you send to an external domain that is hosted exchange server for mail then the Accept/Decline buttons are also there as should be.  If you send to any other external recipient the Accept/Deny buttons are stripped and you will only receive a plain test mail that describes the appointment.
    LVL 65

    Expert Comment

    The use of meeting requests on external recipients cannot be guaranteed because it is an Exchange only thing. A server in between doing antivirus or antispam scanning could break the message so that they do not work.

    It should be presumed that meeting requests do not work to external recipients - and there is nothing that you can do to change that.


    Author Comment

    I have 2 of the same setups.
    both clients are on Exchange 2003 SP2 using Outlook 2003/2007 clinets.  Both use Postini smart hosts for sending mail through.  Both clients have the same ISP.  If I send from both of those locations I get the invite properly from the one company and not from the other.  

    I know that you say I should assume the above is true but my experience in 200+ exchange environments we have is this is the only client to have this issue.  I must say it is truely strange.  I have even attempted to change them to RTF for a test and have not had any luck there.

    It there any thing else you could suggest..any place else to look?

    Thank you,

    Author Comment

    this client has a strange issue to where their out of office attendant does not work.  I am thinking there is a setting on Exchange server that I have botched up.
    LVL 65

    Accepted Solution

    If you have it working elsewhere then you have been fortunate. My policy when it comes to invites to external recipients - do not expect it to work.

    As it isn't part of any standard it is easily broken by SMTP scanning facilities - firewalls, antispam, antivirus. Things that are outside of your control.

    The fact that it does arrive at some destinations correctly would tend to indicate the problem isn't local.

    I don't know what else to suggest really.

    Out of the Office on Exchange 2003 not working is unusual. The only thing that can stop it from working with that version is lack of the Free/Busy system folder. However it should log something if that was the case.


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