I was referred to this website by UCE Protect, after being advised
(via a third party) that my IP address had been blacklisted.

My problem is that I don't understand the information provided on the
UCE Protect site, nor on the backscatter site, and I don't know how to
go about fixing the problem.

I do manage several large email lists using the affected domain (using
ezmlm and qmail) which were set up for me by a contract technician. I
have been managing these lists, using the same software (via various
upgrades, obviously), for more than 10 years - so I am a bit surprised
to find myself listed (according to the UCE Protect site, I have been
listed three or four times previously).

I would like to fix whatever it is I am doing that is causing the
problem, but I can't work out what I am doing wrong. I don't know what
'backscatter' or 'sender callouts' are (even after reading all the
documentation and doing a google search), but as far as I know I am
not using such devices.