thanks, i actually figured it out i needed authentication.:

EXEC @hr = sp_OASetProperty @iMsg, 'Configuration.fields("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate").Value', '1'

EXEC @hr = sp_OASetProperty @iMsg, 'Configuration.fields("http://schemas.microsoft.com/cdo/configuration/smtpserver").Value', mail server

...

you HAVE to use the ",@rv out," parameter. if not it wont work

EXEC @hr = sp_OAMethod @iMsg, 'AddAttachment',@rv out, @ATTACHMENT

RG.