Sep 202009

I was realy surprised on how easy it was to set up hosting using google apps. Fisrt of all, all we need is just go here and fill out the application.

if you’re using it for family, private user or non-profit organisation google apps is freely to use. Of course we can Upgrade to Google Apps Premier Edition for bigger storage at 25 GB per user.

The first step of the application is to enter your domain name, if you already have one. Or you can buy a new domain name through Google which automatically sets everything up for you.

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Sep 122009

Sometimes we need to do manual whitelisting for mail users whose customers’ admins don’t respond to your complaints about their server settings.

Another option to consider ist automatic whitelisting by using the hand-crafted DNSWL ( ). We should also consider requesting to get added to DNSWL.

rsync --times* /some/path/

In /etc/postfix/ add this line within the smtpd_recipient_restrictions :

smtpd_recipient_restrictions = ...
     check_client_access cidr:/etc/postfix/postfix-dnswl-permit,

Note that reject_unauth_destination must should come before the check_client_access to ensure you do not become an open relay for the whitelisted networks.

After that reload postfix

# postfix reload

we can also put in cronjob/crontab for autmatically updating dnswl db.

01 * * * * root /path-to/ > /dev/null 2>&1