Verizon is one of the many Internet Service Providers that require you to authenticate when sending mail. The purpose of SMTP authentication is to reduce email spamming and abusive mailing behaviors.

The Simple Mail Transport Protocol, or SMTP, is a standard for how computers talk to each other to send email. If you're sending email using Microsoft Outlook, your computer may connect to your ...

I work for an ISP and occasionally deal with customers who swear up and down that they need *our* outgoing email server to make email that we do not host or provide work. Example: Customer has ...

My Exchange 2010 server has five IP addresses. I've got the second one configured as the mail server, and the SMTP receive connector listens only on that address. However, all outgoing SMTP is using ...

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 ...

Email: It’s been around for decades, and people are still confused about how it works–and for good reason. Setting up and troubleshooting an email account can be an irritating venture. Recently, we ...

Gmail's been able to send emails from other email addresses you own for a long time, but it was never perfect. Here's a simple step-by-step for getting rid of the all-too-annoying "on behalf of" ...

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 ...