You must have and read a "Postmaster" account that accepts mail to the postmaster address at all email hosts. This account will get messages from other mail administrators, other mail servers which have received messages with problems in the headers, confused people looking for someone in your company, and so on.
You must read these messages frequently, at least five times a week, as some of them will be urgent and require immediate attention.
For additional information, see Reading the Postmaster Messages .
To set up a Postmaster account, see Creating a Mail User Account .
User names and mail addresses formats are limited: you should only use unaccented Roman characters, numbers, and a few punctuation marks (usually plus, period, hyphen and underscore "_"). Do not use spaces in names or email addresses.
When you set up email addresses for your mail host(s), you should use a basic naming pattern, with variations and exceptions as appropriate. That helps people both inside and outside your organization to guess an email address, when they need to get in touch with someone and don't have access to your LDAP server.
There are a number of patterns you may choose to set up user names in your mail hosts:
You can mix and match the order and the punctuation as you please.
Some people who have been active on the Internet for many years have created a net identity with their email address. They may prefer to use that email address rather than following your conventions.
In that case, you can make multiple entries for that person, and forward all messages from the conventional names to the preferred account. For instructions, see Forward To .