[dns-operations] DNSSEC and qmail

[Stephane Bortzmeyer]

On Thu, Oct 08, 2009 at 09:39:52AM -0400,
 Shumon Huque <shuque at isc.upenn.edu> wrote 
 a message of 41 lines which said:

> An internal department reported that they could no longer send mail
> to Penn mail servers.

This is a good opportunity to remind all the DNS resolver admins that
they must check their name servers can receive large responses:

https://www.dns-oarc.net/oarc/services/replysizetest