It's just there is no Host record exist in the remote DNS server for that particular MX record., that the reason it returns Host not found. If you try to ping it, say host101.covisint.com you'll get no reply to give an example. Email always gets thru but I doubt if it is againsts RFC rules or not. PS : This is not related to reverse lookup.
---------- Original Message ---------------------------------- From: "Kenzo" <[EMAIL PROTECTED]> Reply-To: [EMAIL PROTECTED] Date: Wed, 19 Mar 2003 11:40:19 -0600 > >I've seen similar threads in the archives, but didn't see one that would >answer my question. >Here is what I see in the maillog. > >Mar 19 07:56:49 mailgate postfix/smtpd[62724]: warning: 64.37.249.101: >hostname host101.covisint.com verification failed: Host not found > >Mar 19 07:56:49 mailgate postfix/smtpd[62724]: connect from >unknown[64.37.249.101] >Mar 19 07:56:49 mailgate postfix/smtpd[62724]: B39E45A8: >client=unknown[64.37.249.101] >Mar 19 07:56:54 mailgate postfix/cleanup[62736]: B39E45A8: >message-id=<[EMAIL PROTECTED]> >Mar 19 07:56:54 mailgate postfix/qmgr[31202]: B39E45A8: >from=<[EMAIL PROTECTED]>, size=1523, nrcpt=1 (queue active) >Mar 19 07:56:54 mailgate postfix/smtpd[62724]: disconnect from >unknown[64.37.249.101] >Mar 19 07:56:58 mailgate ravpostfix[62771]: data received... begin >scanning... >Mar 19 07:56:58 mailgate ravpostfix[62771]: scanning returns OK... sending >file... >Mar 19 07:56:58 mailgate postfix/smtpd[62730]: connect from >localhost[127.0.0.1] >Mar 19 07:56:58 mailgate postfix/smtpd[62730]: 3BBC8591: >client=localhost[127.0.0.1] >Mar 19 07:56:58 mailgate postfix/cleanup[62725]: 3BBC8591: >message-id=<[EMAIL PROTECTED]> >Mar 19 07:56:58 mailgate postfix/smtpd[62730]: disconnect from >localhost[127.0.0.1] >Mar 19 07:56:58 mailgate postfix/smtp[62731]: B39E45A8: >to=<[EMAIL PROTECTED]>, relay=127.0.0.1[127.0.0.1], delay=9, >status=status=sent (250 Ok) >Mar 19 07:56:58 mailgate postfix/qmgr[31202]: 3BBC8591: >from=<[EMAIL PROTECTED]>, size=1695, nrcpt=1 (queue active) >Mar 19 07:56:58 mailgate postfix/smtp[62727]: 3BBC8591: >to=<[EMAIL PROTECTED]>, relay=10.25.1.6[10.25.1.6], delay=0, status=sent >(250 Message queued) > >I thought that if the reverse lookup fail, it was suppose to reject the >E-mail? >Why did the message go thru? is it because it's a warning and not a reject >or error message? > >thanks. > >
