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Problem: 'User Unknown' Error For ESO Users

Introduction / Philosophy

If a mail message is sent to username@@eso.org and the sender believes the address to be right, then here's the order of things to check

Procedure

First verify if the user does exist in the mail system, but running:

$ telnet web3 smtp
220 web3 sendmail
vrfy username

If the user exists then the problem probably lies with the MUA or the user's typing.

Otherwise, login to poisson and check the user exists in /var/aliases/forward.list. If the user exists then in the same directory run:

poisson# make

$Header$

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