Can someone please help me with this i have been browsing all day trying to find a fix for this and nothing I do is working. Any customers that are emailing us from yahoo seem to be getting stuck in a loop. Looking at the log this is the error we are receiving
relay=mta6.am0.yahoodns.net[220.127.116.11]:25, delay=193731, delays=193709/0.01/11/10, dsn=4.4.2, status=deferred (lost connection with mta6.am0.yahoodns.net[18.104.22.168] while sending end of data -- message may be sent more than once)
If someone could please shed some light on this I would appreciate it.