I used contact category (group of contacts) in Bcc field to send the same message to the group.
For last few days when I include that category or another one (I have 3 different categories) in Bcc field WLM complains in the following message:
"
The message could not be sent.
Type an email address for one or more receipients in the To, Cc or Bcc boix.
"
I have not changed (add, removed) my contacts nor category in few months.
What is wrong?
/jas