Load balancing outgoing mail relay

Noel Jones noeldude at gmail.com
Wed Jan 17 17:33:51 UTC 2007

On 1/17/07, Charles Trevor <ct.lists at qgsltd.co.uk> wrote:
> What happens if you do multiple dig/nslookups for smarthost.domain.tld.
> Are the records returned in a different order each time? If not the
> problem may be at the NS.

Nope.  Postfix shuffles equal-weight MX records internally, so it
doesn't matter what order the NS presents them.  Multiple A records
without an MX record (or when MX lookups are suppressed) are treated
as equal-weight MX records per RFC.

This is likely a postfix configuration problem.  The original poster
should seek further help on the postfix-users list.

Noel Jones

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