Redhat server cannot send email

Posted on Posted in Programming, Linux

I want to share how to solve the problem if our server (I use Redhat base) suddenly cannot sending the email.

  1. You can check the email log with code

    tail -f /var/log/maillog

  2. In My case, I have problem :
    [code] postfix/smtp[22031]: F2F76411B9: to=<———–>,[]:25, delay=1129,
    delays=1127/0.07/0.9/1.3, dsn=2.0.0, status=sent
    (250 2.0.0 OK 1392263109 ix4si518951pbb.29 – gsmtp)
    Feb 13 10:45:09 webPrimary postfix/qmgr[22023]:
    F2F76411B9: removed[/code]

    When you check the result, this problem caused no resolve.conf (In my server, I use postfix app for sending the email)

  3. Check the file resolve .conf with command :

    cat /etc/resolv.conf

  4. Because of use google apps for email sending, I put the DNS google to the configuration

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