I had a button on a report that worked perfectly and would generate an email with one recipient and one cc and a subject line. The recipients were manually programmed in (i.e. they were not part of any tables or queries) as "someone@domain" and it worked absolutely fine. Yesterday I split the database and created an accde front end and sent it out. Now today when I went to double check everything was still a-okay, I get a run time error telling me the message could not be sent; unknown recipients. I went back to the original copy of the database and got the same error message! It was working just fine for weeks and now it doesn't! Is this Access or perhaps my mail server??