[Dune] Returned mail: see transcript for details

[Mail Delivery Subsystem]

The original message was received at Wed, 4 Nov 2009 18:31:20 +0100
from mail.iwr.uni-heidelberg.de [129.206.104.30]

   ----- The following addresses had permanent fatal errors -----
<dan.popovic at ipvs.uni-stuttgart.de>
    (reason: 550 5.1.1 <dan.popovic at ipvs.uni-stuttgart.de>: Recipient address rejected: undeliverable address: ho...matik.uni-stuttgart.de[129.69.216.250] said: 550 5.0.0 Access denied (in reply to MAIL FROM command))

   ----- Transcript of session follows -----
... while talking to mailgw.informatik.uni-stuttgart.de.:
>>> DATA
<<< 550 5.1.1 <dan.popovic at ipvs.uni-stuttgart.de>: Recipient address rejected: undeliverable address: host hermes.informatik.uni-stuttgart.de[129.69.216.250] said: 550 5.0.0 Access denied (in reply to MAIL FROM command)
550 5.1.1 <dan.popovic at ipvs.uni-stuttgart.de>... User unknown
<<< 554 5.5.1 Error: no valid recipients
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