Hi, How can I send a fax from c# ? If I use System.Web.Mail namespace I manage to send a fax as long as the fax number is registered in my outlook addressbook. If I try to send to a fax with the syntax [FAX: <fax#>] , I get an error which says 'invalid address'. Thanks for any help. Kvitepus
Some additional info: We use Ms Exchange 5.5 on Windows 2000 and we have a fax server called Faxination for MS Exchange.