Another MX question
Brad Knowles
brad.knowles at skynet.be
Tue May 22 17:15:00 UTC 2001
At 5:55 PM +0200 5/22/01, Enrik wrote:
> if mail1 is online he catch all the emails for mydomain.edu.
> If it is down than the emails go to mail2.mydomain.edu.
> It's True? ( I DONT KNOW....)
Most mail servers will probably act this way, yes.
> Well if it's true why mail2 catch some mail for mydomain.edu
> if mail1 is online?
Because mail1 may have been temporarily overloaded, or
unreachable by some systems. In addition, there are some
spam-generation tools that *ALWAYS* transmit their effluent to the
secondary MX, under the assumption that it is less secure than the
primary, and may be able to sneak in through the "back door".
--
Brad Knowles, <brad.knowles at skynet.be>
/* efdtt.c Author: Charles M. Hannum <root at ihack.net> */
/* Represented as 1045 digit prime number by Phil Carmody */
/* Prime as DNS cname chain by Roy Arends and Walter Belgers */
/* */
/* Usage is: cat title-key scrambled.vob | efdtt >clear.vob */
/* where title-key = "153 2 8 105 225" or other similar 5-byte key */
dig decss.friet.org|perl -ne'if(/^x/){s/[x.]//g;print pack(H124,$_)}'
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