North American Network Operators Group|
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Re: Verisign suggestion
On Thu, 18 Sep 2003 08:24:40 -0400 (EDT) Todd Vierling <firstname.lastname@example.org> wrote: > : > ...and for heavens sake, stop accepting any kind of request at all on port > : > 25!! Just shut it down altogether. There is no reason for you to accept > : > any connection of any kind on port 25! > > : If they don't accept anything on port 25, either by sending all packets > : to /dev/null or by responding with SYN+RST ("Connection refused"), MTAs > : everywhere will consider this a "temporary error." > > Then the wildcard should have included a MX that points to nowhere, rather > than implementing a fake MTA that allows the MAIL FROM and RCPT TO addresses > to be transmitted. The record "IN MX 0 ." is commonly used for this > purpose. Yeah, thanks for pointing this out. T'was an accidental omission in my mail.