Robert Heller writes:
> Is anyone else seeing this sort of problem?
Yes, it's not just you and Mark. There have been several threads on
this recently, naming one or more of Verizon, Yahoo!, or AOL as the
problematic destination, all of which are under one management now.
The combined entity is
I run a *small* Mailman 2.x server on a VPS running CentOS 7, with Postfix. I
have one E-Mail list with just under 500 members, about 60 of which have
@yahoo.com addresses and another 15-20 with @aol.com addresses. For the past
couple of weeks, Yahoo's servers have been "deferring" mail from my
