Author: Thomas Hochstein Date: To: exim-users Subject: Re: [exim] Spammers keep lists of MX long after DNS MX has been
deleted
"Alan J. Flavell" schrieb:
> This might be well known, but we've noticed that spammers must be
> keeping lists of old MX entries, long after we've considered the
> associated email domains to be obsolete and have deleted the MX
> entries in the DNS.
I can second that. They do keep the IP of the former MX host, not only
the hostname; the A record of my old MX is now pointing to a different
IP for weeks, but I get the bulk of spam at the old host.
