Something is blocking my emails

[Kean]

Hi!
Over the last few weeks I've had some problems with sending out emails. My email address is about 4 years old and up to a few weeks ago I was regularly sending emails to various friends who I now can't send them to. Sometimes they don't arrive, to one friend it arrived with the word "spam" written next to my name, and today I got one returned with the following message:

"SMTP protocol diagnostic: 550 5.7.1 This system has been configured to reject your mail"

So am I right in thinking that my email address (or would it be IP address..?) has found its way onto some blacklist.

Any advice on what's happened and how to fix it?

Thanks in advance

 

[PC eye]

It sounds like the mail rules have been changed for you regular contacts. They probably have either updated spam filters or security features added to their regular accounts. They would probably have to re-establish you as a safe contact.

A blacklist or invalid email address? There's one site for checking to see you were put on a spam watch list found at
http://www.pimlicosoftware.com/invalidemails.htm
http://www.pimlicosoftware.com/oldinvalidemails-2003-2004.htm
http://www.pimlicosoftware.com/oldinvalidemails-2005.htm