On 4/20/2008 2:54 PM, Rich Greenberg wrote:
>
> Q for Lsoft:  Why is Buffalo not accepting this?  I assume it is
> supposed to because I get probes from at lest 4-5 other Listserv sites
> and only the probes from Buffalo are having the problem.
> Wouldn't this mean that ALL probe failures are failing?
> I am getting mail from the Buffalo list with no problems.
>

I am not with L-Soft, but I think I can answer this one.

The message to the VERP'd address is being rejected by the MX host for
listserv.buffalo.edu, not by listserv.buffalo.edu itself. It appears that
the folks at Buffalo have provided their MX hosts with a list of all valid
recipient addresses on listserv.buffalo.edu, perhaps in an attempt to reduce
accept-and-bounce backscatter for invalid addresses on the list server.
Unfortunately, the list does not include the VERP'd addresses which are used
as sender addresses on subscription probes. Consequently, messages to VERP'd
addresses are undeliverable.

--
Paul Russell, Senior Systems Administrator
OIT Messaging Services Team
University of Notre Dame
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