Category Archives: Bipin hands-on

NTP Server

NTP [root@server1 ~]# yum install ntp /usr/sbin/ntpd —> Service /etc/ntp.conf —> Main File /etc/ntp/keys —> Contains Encryption keys /var/lib/ntp/drift —> Hardware clock drift statistic ( A file that will be used to store information about the inaccuracy of the local … Continue reading

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postfix-recipient-restriction in zimbra

http://wiki.zimbra.com/wiki/RestrictPostfixRecipients here xyz.com is my domain.   [root@desktop51 ~]# su – zimbra [zimbra@desktop51 ~]$ cd postfix/conf/ [zimbra@desktop51 conf]$ cat r_sender_list xyz.com    OK [zimbra@desktop51 conf]$ cat r_recipient_list guest@xyz.com    recipient_list [zimbra@desktop51 conf]$ postmap r_sender_list [zimbra@desktop51 conf]$ postmap r_recipient_list [zimbra@desktop51 conf]$ … Continue reading

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postfix-sender-restriction

http://wiki.zimbra.com/wiki/Ajcody-MTA-Postfix-Topics#For_ESMTP_Auth_is_LOGIN_-_Example http://wiki.zimbra.com/wiki/Restrict_sending_to_certain_domains here xyz.com is my domain. [root@desktop51 ~]# su – zimbra [zimbra@desktop51 ~]$ cd postfix/conf/ [zimbra@desktop51 conf]$ cat s_sender_list guest@xyz.com    sender_list [zimbra@desktop51 conf]$ postmap  s_sender_list [zimbra@desktop51 conf]$ cat s_recipient_list xyz.com    OK [zimbra@desktop51 conf]$ postmap  s_recipient_list [zimbra@desktop51 conf]$ … Continue reading

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Nsupdate for DDNS update record

DDNS update with Nsupdate utility Adding records > update add www1.example.com 86400 a 172.16.1.1 > update add http://www.example.com 600 cname www1.example.com. > send > update add 1.1.16.172.in-addr.arpa 86400 ptr www1.example.com. > send Multiple updates > update delete http://www.example.com cname > … Continue reading

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postfix to gmail with multiple user configuration

http://www.zoneminder.com/wiki/index.php/How_to_install_and_configure_Postfix_as_a_Gmail_SMTP_relay_for_ZoneMinder_email_filter_events. http://www.ulduzsoft.com/2012/02/your-personal-gmail-like-mail-system-smtp-server/ vim /etc/postfix/mail.cf #add this line relayhost = [smtp.gmail.com] smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_password smtp_sasl_security_options = noanonymous smtp_use_tls = yes smtp_sasl_tls_security_options = noanonymous smtp_tls_CAfile = /etc/pki/tls/certs/ca-bundle.crt vim /etc/postfix/sasl_password smtp.gmail.com  xyz333999@gmail.com:password@123 postmap  /etc/postfix/sasl_password /etc/init.d/postfix restart check it echo redhat … Continue reading

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