Yahoo Mail Servers Rejecting Email
If you use Yahoo! mail as your main email account, you might not be receiving all of your emails. What is Yahoo thinking??? Recently Yahoo has started “greylisting extremely deprioritizing” almost every email that goes through their mail server. Greylisting This is a way of attempting to block SPAM. Yahoo mail denies the first every delivery attempt of an email (451 Message temporarily deferred - 4.16.50) from deprioritized mail servers. They assume that SPAMers don’t try sending the same email twice, so they put the ip address of that email server on a list and then if the delivery is retried within a short amount of time, they assume that it is a good email. Read the full story » [...more]
