I finally got the correct contact info from Yahoo Customer Service, and once I emailed, they called me back within hours. Impressive. The email address was bulk mail inquiry at yahoo dash inc dot com
The issue is that Yahoo de-prioritizes email from IP addresses which generate a lot of bounces. This persists for about 4 hours. Hope this helps someone. Omar On Fri, Mar 22, 2002 at 07:18:28PM -0500, I wrote: > Just this week, Yahoo has stopped accepting the same volume of mail > from some large mailing lists that I host. There's no error > message - our server connects to Yahoo's SMTP server, then the > connection is closed. This doesn't happen every time. I've observed > success/failure between 1/1 and 5/1 since this started.
