[jolmg]

> Keeping a server running 24x7 is the challenge for me as far as email is concern. What happens when your server is down and someone mails you?

I imagine that if the client or an MTA can't connect to an SMTP server, then the mail would stay in an outbox queue until it is able to connect and hand it off. I don't think mail is permanently lost if an SMTP server goes down for a few hours. If an intermediary MTA gives up on connecting to an SMTP server, I would at least expect it to bounce the email back to the sender with an explanation.

I don't think email is as fragile as you seem to think.

[codegladiator]

Yes that is correct. Email outgoing mechanism usually stores in a Queue and providers retry sending mail for about 3 days (depends on provider to provider).

And if deliver fails, the sender also gets an email (from their own MTA) mentioning that delivery failed.