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 @yahoo.com 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 reliability.