Reggel óta, kb 10 percenként kapok egy e-mailt. Tudja valaki mi ez? (tudásbázis kérdés)

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The original message was received at Thu, 12 Nov 2009 07:42:19 +0100

from webmail.eunet.rs [194.247.192.40]

----- Transcript of session follows -----

<katrina.andresen@yahoo.com>... Deferred

.... while talking to helios-store.physics.utoronto.ca.:

>>> DATA

<<< 450 4.1.1 <katrin@physics.utoronto.ca>: Recipient address rejected: User unknown in local recipient table

<katrin@physics.utoronto.ca>... Deferred: 450 4.1.1 <katrin@physics.utoronto.ca>: Recipient address rejected: User unknown in local recipient table

<<< 554 5.5.1 Error: no valid recipients

Warning: message still undelivered after 4 hours

Will keep trying until message is 5 days old