ToDo and alarm!

Hello,

I have the following problem: in a ToDo, somebody placed an alarm to inform himself the day before for this ToDo.

He received the alarm but somebody else that is in his adress book, received also this remainder.

This person is not at all mentioned in the ToDo (only one person, himself!).

We tried four more times and each time the second person received also this remainder. I checked the SMTP server and can see each time the outgoing mail to this second person.

I insist, this second person is not mentionned in the ToDo but exists in his adress book and the names are not similar at all!

Any idea?

Thanks for all inputs.

Jean-Claude