From: Chris Higgins (chris.higgins at domain horizon.ie)
Date: Mon 20 Aug 2001 - 21:42:18 IST
> It would seem so, from my reading of the bat, but it would seem more
> rational in one way for a secondary only to forward mail to the lowest
> preference mail server for which it finds a record. However, I'm sure there
> are a thousand reasons why I've got it wrong again :-)
#1 rule of SMTP -
Deliver to host with lowest MX priority - let it worry about it.
at domain IN MX 5 mail.yappy.com.
at domain IN MX 10 mail1.yappy.com.
at domain IN MX 10 mail2.yappy.com.
at domain IN MX 100 mail3.yappy.com.
All mail will move towards mail.yappy.com.. except that because
mail1 / mail2 have the same MX record - they will forward to
mail.yappy.com only and not to each other.
Remember that mail3 may not be able to SMTP connect to mail.yappy.com
(access list / firewall)... so mail3 will try mail and then fall back
to MX 10 and try mail1/mail2..
mail1 and mail2 will only try deliver to mail.yappy.com
> Thanks for your help,
> Irish Linux Users' Group: ilug at domain linux.ie
> http://www.linux.ie/mailman/listinfo/ilug for (un)subscription information.
> List maintainer: listmaster at domain linux.ie
-- ** Chris Higgins e: chris.higgins at horizon.ie ** ** Technical Business Development tel: +353-1-6204916 ** ** Horizon Technology Group fax: +353-1-6204949 **
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