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 ...

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 ...

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 ...

Some Outlook users have reported that they are unable to send email from the app as when doing the same, they receive Error 503 stating that the Valid RCPT command ...