With many types of business email accounts, your computer connects to a machine called the Simple Mail Transfer Protocol server when you send messages. If you have difficulty sending messages, there ...

Thunderbird only (Windows/Mac/Linux): Experimental Thunderbird extension SendVia changes your outgoing SMTP mail server on the fly while composing a message. Using the extension is as simple as ...

It appears many Mail users are having authentication problems in which they are prompted for the username and password every time a message is sent (either manually ...

I use Outlook for my general email. Recently, Comcast shut down my modem's port 25 and required me to use port 587 for security reasons. Separately, I use Thunderbird to send email relating to a small ...

Orginally my exchange 2003 server was setup by a consultant company. They supplied me with pop3 client settings that would work for someone remotely connected to the office. -- Big suprise they don't ...

This list is a companion piece to the Secure Web server installation portion of SearchSecurity.com's Intrusion Defense School lesson on Web attack prevention and defense. Check out the companion ...

Many Mail.app users are experiencing an problem in which the application will not send. The Mail application receives incoming messages properly, but when users attempt to send messages they are ...

Q: When traveling, I am not always able to send e-mail when using a hotel high-speed connection. I can receive e-mail, but I can't send any. What is causing this problem? A: Most Internet providers ...