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 ...

So I have to change my outgoing SMTP server in OS X. Easy enough, except for this: the Mail.app prefs only show a single server for config, while the Internet panel in System Prefs offers separate ...

Outgoing mail for Microsoft email programs is automatically routed through the Microsoft Exchange Server. It is possible to change this server to something else and to stop outgoing email from using ...

For years, POP (Post Office Protocol) email has been a thorn in my side. Apple's email service uses the IMAP (Internet Message Access Protocol) protocol for email, as do many other email services.

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 users have reported to be getting a long error message saying: Send test e-mail message: The connection to the server was interrupted. If the problem continues ...

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 ...