<p>UnderSMTPD reads /etc/aliases for usernames; if a match is identified
the message is piped to the given program. Any problems executing the program
will cause a temporary SMTP error to be returned to the connecting client.</p>
<p>UnderSMTPD reads /etc/aliases for usernames; if a match is identified
the message is piped to the given program. Any problems executing the program
will cause a temporary SMTP error to be returned to the connecting client.</p>