Problems sending mail to yahoo?

Mike Lewinski mike at
Thu Apr 10 18:10:06 UTC 2008

Barry Shein wrote:
> Is it just us or are there general problems with sending email to
> yahoo in the past few weeks? Our queues to them are backed up though
> they drain slowly.

I know that Yahoo does greylisting, and we often have a large queue 
backup as a result of mailing lists with a lot of addresses. 
As long as you keep retrying I find that they do eventually get through.

Between greylisting and sender callback verification, it seems that 
overall email delivery is increasing in latency and decreasing in 

More information about the NANOG mailing list