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Hi Rob -
On Thu, 21 Oct 2010 16:47:40 -0400, rob@xxxxxxxxx wrote:
Now IBM support is trying to determine if this is in violation of some
RFC.
RFC5321 <
http://www.rfc-editor.org/rfc/rfc5321.txt>, specifically
section "5.1. Locating the Target Host".
To quote one part:
When the lookup succeeds, the mapping can result in a list of
alternative delivery addresses rather than a single address, because
of multiple MX records, multihoming, or both. To provide reliable
mail transmission, the SMTP client MUST be able to try (and retry)
each of the relevant addresses in this list in order, until a
delivery attempt succeeds. However, there MAY also be a configurable
limit on the number of alternate addresses that can be tried. In any
case, the SMTP client SHOULD try at least two addresses.
Ken
Opinions expressed are my own and do not necessarily represent the views
of my employer or anyone in their right mind.
midrange.com
