Unless you have a firewall rule blocking TCP access to your name servers. TXT records can be very long so the lookup is done over TCP.
Eric
From: LISTSERV List Owners' Forum [mailto:[log in to unmask]]
On Behalf Of Wayne T Smith
Sent: Saturday, April 16, 2016 11:43
To: [log in to unmask]
Subject: Re: Why on earth are all my AOL subscribers being deleted?
Yes, Michael, that (2014b) contains both of the DMARC workarounds, so DMARC is not the problem.
Cheers, Wayne
On Sat, Apr 16, 2016 at 11:37 AM, Michael Feldman <[log in to unmask]> wrote
, in part
: