MailSite Knowledge Base

• MailSite 7.x
• MailSite 8.x

The 'postmaster' account in the default domain is not counted against your license. 'postmaster' accounts in virtual domains WILL be counted against your license.

For example, assume the following setup:

-Default domain 'email.com'
-Virtual domain 'mymail.co.uk'

-The default domain contains 100 mailboxes for employees and 'postmaster'.
-The virtual domain contains 50 mailboxes for employees and does NOT have a 'postmaster' account

With the above setup, if you are running any version of MailSite prior to 7, then an email addressed to 'postmaster@mymail.co.uk' would actually be delivered to 'postmater@email.com'. Even if you have the 'catchall' mailbox in a virtual domain, the messages for 'postmaster' will be delivered to the 'postmaster' in the default domain.

In MailSite 7 and later, if an email is addressed to 'postmaster@mymail.co.uk', then MailSite will automatically create a mailbox called 'postmaster' in the mymail.co.uk domain and deliver the message to that mailbox.

The implications of the above are that you will have used up an extra mailbox for each domain that the postmaster account is created for. In the above example, you will now end up with 151 mailboxes counting agsinst your license (the postmaster in the default domain is not counted)

Changing this behavior back to that of prior versions

If you would like to change this behavior in MailSite 7 or later so that it behaves in a similar manner to the previous versions of MailSite then simply create a server level alias similar to:

postmaster@*.* ---> postmaster@[defaultdomain.com]

Replace [defaultdomain.com] with the actual default domain name

Once you add the above alias, you should go through your MailSite installation and delete the 'postmaster' account in the virtual domains if they have already been created. They will not be re-created now due to the alias. If there is a particular virtual domain where you would like to use the 'postmaster' account, then simply add the following server level alias and then create the postmaster mailbox in the required virtual domain

postmaster@[virtualdomain.com] ---> postmaster@[virtualdomain.com]

Replace [virtualdomain.com] with the actaul domain name in question. This alias should be above the previously mentioned alias

Now for any message addressed to postmaster@[virtualdomain.com], it will actaully be delivered to the 'postmaster' mailbox in the virtual domain. For all other domains, the message will go to the 'postmaster' in the default domain.