How can a legitimate correspondent bypass the spam filter?

In rare cases you might find that someone who sends you mail is using a mail server that's listed in an anti-spam “blocklist”, so you don’t receive their mail. This can happen if the people who run that server allow it to be mostly used to send spam, even if your correspondent is not actually a spammer.

The simplest way to solve this problem is to add an address or domain name to your “always allow” list, preventing messages from being blocked:

  1. Login to the “My Account” control panel (having trouble?)
  2. Click E-Mail Options
  3. Scroll down the page to the “Reject and Allow Lists” section.

Note that in most cases, simply sending a message to an email address will also allow any replies, so it’s rare that you’d ever need to do this manually. However, the automatic allow rule doesn’t take effect if the sender’s mail server also has a misconfiguration of their SPF settings that makes it look like a forged message — in such a case, manually adding it will fix the problem.