Quote:
Originally Posted by
markdjones82
Neo, wouldn't you need a mail relay server or an actual mail server configured to actually send the mail?
No. You don't need a relay server to send mail directly to an MX record.
In other words, you don't need sendmail, postfix or exchange, etc to send mail. You need these to receive.
The SMTP protocol does not mandate a relay (you need an MTA).
MUA ----> MTA (The MTA is the MX record of the receiver ....)
The unix/linux
mail command is a perfect example of this. PHP also has a built in mail function, etc.
Edit: I don't think the MTA MX is necessarily called a "relay" ... but I would have to check, since it has been a while.