Mail exception handling

I added a new project called B4AEmailHandler We need some functions to improve exception handling. We use Office365 to handle mails, but creating a connection to office365 takes to long so we have to keep a connection open. Task A(1H): [login to view URL] line 29. Handle retries if the send fails. Retry 3 times and force a new creation to the smtpserver. The connection to the SmtpClient is handled in MailhostHolder. There exists a function in Mailhost to ReconnectSend. (Task 9E is about this function) Task B(1H): [login to view URL] line 26. Same as above. Handle connection issues. We might get a indication all is ok from CheckConnection, but then a network issues occured. In case of error, (Exception) Reconnect to the server and retry. Task C(2H): [login to view URL] line 24 and 54. Check if we are still connected. If not - reconnect. Investigate if we can validate the connection with a simple command (noop or similar). If we do not catch it here, we should catch a problem in Task 9A or 9B. Task D(1H): [login to view URL] line 37. We have to close the connection nicely if possible, and then try to make a new connection. Task E(1H): [login to view URL] line 63. We have to close the connection nicely if possible, and then try to make a new connection. The source code is provided.