November 2004
Intermediate to advanced
1024 pages
27h 50m
English
Content preview from Core Java™ 2 Volume II - Advanced Features, Seventh EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Sending E-Mail
In this section, we show you a practical example of socket programming: a program that sends e-mail to a remote site.
To send e-mail, you make a socket connection to port 25, the SMTP port. SMTP is the Simple Mail Transport Protocol that describes the format for e-mail messages. You can connect to any server that runs an SMTP service. On UNIX machines, that service is typically implemented by the sendmail daemon. However, the server must be willing to accept your request. It used to be that sendmail servers were routinely willing to route e-mail from anyone, but in these days of spam floods, most servers now have built-in checks and accept requests only from users, domains, or IP address ranges that they trust.
Once you are connected ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.