Accepted Domains

The Accepted Domains setting on the External Mail -> In Mail settings page is very important for the correct operation of VPOP3. Puzzling message routing problems are often caused by incorrect settings of this parameter.

What should you set it to

What the Accepted Domains setting is depends on what Internet email addresses you will receive messages for.

If you will receive messages for:

The Accepted Domains setting can contain several entries (separated by semicolons - ‘;’) in case your ISP lets your email be addressed in several ways, (e.g. if you have a normal ISP account and also have email forwarding to that account from a registered domain name).

The Accepted Domains setting can also contain complete email addresses as well as email domains. This can be useful if you should only receive messages to certain addresses at an email domain instead of all addresses. If you specify email addresses, you can use a wildcard to specify a group of email addresses (eg *.mysite@mycompany.com)

As a rule:

• if you can receive messages addressed to <anyone>@address, then ‘address’ should be the entry in the Accepted Domains field,

• if you can only receive messages to person@address, then ‘person@address’ should be the entry in the Accepted Domains field.

What the Accepted Domains setting does

The Accepted Domains setting is used for correct detection of incoming messages to people at your site when VPOP3 downloads messages using POP3 and is set to parse the headers looking for recipients.

When an email message arrives at your site from the Internet, it may be addressed to several people, not all of which are at your site. For instance, you might receive a message which is sent To: simon@yourcompany.co.uk, philip@anothercompany.co.uk

VPOP3 must know which email domains can be accepted, otherwise it would try and send this message to both simon and philip at your site, instead of only to simon.

By looking at the Accepted Domains setting, VPOP3 knows which email domains is should be processing for the particular In Mail configuration. In the above example, this setting would contain at least ‘yourcompany.co.uk’.