On Tuesday 06 May 2003 01:28 pm, Dave Crocker wrote:
But a rogue spammer who owns an MTA is free to list whatever other
domain names it wants in the RMX. So nasty-spammer.com is free to have
an RMX entry for aol.com.
The recipient MTA is the one checking RMX records. If nasty-spammer.com's DNS
server has RMX records for aol.com then he can deliver spam to himself but
when he tries to deliver it to me, my server will ask aol.com's servers for
the RMX records and find that he is not an authorized aol.com mail server.
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