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
Hope this helps someone.
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.