Date: Mon, 4 Dec 2006 21:54:29 +0200 From: a@zeos.net To: freebsd-questions@freebsd.org Subject: What is the difference between "No address associated with name" and "Unknown host" Message-ID: <20061204195429.GA920@host.my.domain>
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What is the difference between "No address associated with name" and "Unknown host": $ ping accounts.eirtrade.ie ping: cannot resolve accounts.eirtrade.ie: No address associated with name and $ ping accounts.eirtrade.i ping: cannot resolve accounts.eirtrade.i: Unknown host The source of my interest is the next. My sendmail receives mail from senders with domains like the first, but rejects mail from the last: ------------------------------------------------------------------------ $ telnet localhost 25 Trying ::1... telnet: connect to address ::1: Connection refused Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. 220 host.my.domain ESMTP Sendmail 8.13.7/8.13.6; Mon, 4 Dec 2006 21:38:50 +0200 (EET) HELO localhost 250 host.my.domain Hello localhost [127.0.0.1], pleased to meet you MAIL From: asdf@accounts.eirtrade.ie 250 2.1.0 asdf@accounts.eirtrade.ie... Sender ok RSET 250 2.0.0 Reset state MAIL From: asdf@accounts.eirtrade.i 553 5.1.8 asdf@accounts.eirtrade.i... Domain of sender address asdf@accounts.eirtrade.i does not exist QUIT 221 2.0.0 host.my.domain closing connection Connection closed by foreign host. ------------------------------------------------------------------------ Elisej Babenko
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