Comments by Don.Coleone (Top 2 by date)

Perhpas it has something to do with SSL/TLS. You know...for safety consideration, your application needs to do more rather than some simple steps based on SMTP. My suggesstion is that you check out respondings from your SMTP mail server. Sorry I'm not a .NET developer, so my way of doing so is using winsock control provided by VB to send SMTP cmds and check data returned. Usually, a [-ERR + Error Description] formatted response is returned if an error occurs.

Works or not, Just my guess...