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Thread: cannot send email to sina/yahoo

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  1. #1
    Join Date
    Mar 2006
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    China
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    Default cannot send email to sina.com or other domain

    problem 1:
    cannot send email to sina.com via outlook, but send email to them via webmail is ok.

    /var/log/zimbra.log
    Jun 20 14:44:22 linjun postfix/smtp[18562]: DB42B2806D5: to=<koolokamba@sina.com>, relay=freemx2.sinamail.sina.com.cn[202.108.3.231], delay=238, status=deferred (host freemx2.sinamail.sina.com.cn[202.108.3.231] said: 450 4.7.1 Client host rejected: cannot find your hostname, [88.888.88.88] (in reply to RCPT TO command))


    problem 2:
    cannot send email to some domain via outlook, but send email to them via internal network is ok.

    /var/log/zimbra.log
    20.192.52.35]: 554 <t.kozuka@hayatele.co.jp>: Relay access denied; from=<zimbra@zimbra.com.cn> to=<t.kozuka@hayatele.co.jp> proto=ESMTP helo=<gz180>
    Last edited by koolokamba; 06-20-2006 at 01:12 AM.

  2. #2
    Join Date
    Aug 2005
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    San Mateo, CA
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    Default

    These may be related. Doesn't look like you have reverse DNS setup for the hostname. Have you tried setting up a relay host to your ISP?
    Looking for new beta users -> Co-Founder of Acompli. Previously worked at Zimbra (and Yahoo! & VMware) since 2005.

  3. #3
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    Default

    your suggestion for problem 1 is ok.

    but the problem 2...

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