[sniffer] yahoo mail problems

[Tech Support]

I’m sorry to post this here but we are desperately looking for opinions quickly as this has becoming a real issue to us and I could not think of any better place to find truly technical mail server folks J     We seem to be having multiple mail servers on multiple networks having issues sending to yahoo servers for going on 36 hours now these are a variety of server types on a variety of networks telnet on port 25 is usually getting this 451 Message temporarily deferred - 4.16.50 keep in mind that some of our servers are having no issues sending mail any one else having this issue