Why is my email not being delivered to an address I've been in contact with before and receive emails from?

I have been sending email to a person repeatedly and receiving email from there for a few years. All of a sudden they are not getting my mail. When they email me and I reply directly to them, it is still not going through. I do not get a message saying the email address is wrong.
Why is my email not being delivered to an address I've been in contact with before and receive emails from?
There are a variety of reasons that may cause non-delivery. These can start with your email server being mis-configured, to your mail server domain or IP address appearing on a black list. The appearance on a blacklist can occur for a variety of reasons.





Over 30% of email marketing messages are not being delivered to recipients. Many of these are blocked because your IP address is on a black list. AOL blocks over 80% of the email that it receives to its members.





Often you are blocked because your IP is in a range of IP addresses that has been marked as sending spam. You may also be blocked because your IP is an open relay.





This means that your email domain may be put on a blacklist and therefore your email may not be delivered without you knowing or having done anything wrong.


I hope I helped if you require further information please visit http://www.ask-leo.com/why_are_emails_i_...
Reply:ok ive read into it if he or she has blocked they can send messages to u but when u reply they wont receive the email. cause he or she has blocked u
Reply:restart your computer..


log out,log back in


and try again


If it still doesnt work something is wrong with the address
Reply:Maybe they have closed their email account.