Handling of messages which are bigger than SMTP SIZE

[mfvm]

As written on the list I've an issue with the sending of large messages (resp the error handling). In current versions the following happens:

• The user creates a huge Mail and tries to send it.
• The message is created / encoded
• An SMTP EHLO is send to the server
• If the message is greater than the SIZE given in the EHLO answer, QUIT is send to the server, the message window is closed and a popup is displayed: "SMTP Server 'MAIL' command reply is too large to be sent.
• The Message is copied to the 'Sent' folder (if the 'Copy To' Option is activated) and kept in the Outgoing queue

There are several problems with this aproach:

• If mulberry would also send 'MAIL FROM: <foo@…> SIZE=12345678' the Mailserver could reject the message properly and log the problem, which would simplify a later analysis (as users tend to ignore funny popups)
• As the message could not be sent it should not be copied in the 'Sent' Folder. This behavior may cause confusion, especially as the message window is closed.
• As the SIZE limit of the SMTP Server is not likely to change very often the message should not stay in the outgoing queue.