Hi, On 21 Dec 2000, at 11:06, Adrian Wells wrote: <snip>
POP3 generally has the advantage that emails are only deleted once they have been successfully collected, a failure during SMTP collection could result in emails being lost.
That's interesting, I had always assumed some form of hand-shaking was taking place.
Yes. I'm not on very knowledgable ground here but I'm pretty sure that an email is only deleted from the mail queue of the sender once receipt of it has been acknowledged by the receiver. As a worst case scenario I think you could have a situation where the email is passed from the sending host to receiving host, and the communication is cut after the receiving host has the entire message, but before the sending host has received acknowledgement that it's been received, so it keeps its copy and will resend it. The timing on this would need to be pretty precise though. I strongly suspect that SMTP is a pretty failsafe method of moving email around. -- Nick Drage - half understanding Pegasus until he gets his Linux partition sorted out......