Why does my mail to RKG bounce?

Thu Sep 14 20:52:18 CEST 2006

My mail to RKG seems to bounce. The address I have seems to match Seqfan mail from RKG, so I think the addy is up to date. Did I do something to offend his server?

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Reporting-MTA: dns; comcast.net
Arrival-Date: 14 Sep 2006 18:25:46 +0000
Content-Type: text/plain

Final-Recipient: rfc822; <rkg at cpsc.ucalgary.ca>
Action: failed
Status: 5.0.0 550_5.7.1_<rkg at cpsc.ucalgary.ca>..._Access_denied
Diagnostic-Code: smtp; Permanent Failure: Other undefined Status
Last-Attempt-Date: Thu, 14 Sep 2006 18:25:47 -0000
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