One domain can have several names. These are also known as domain aliases. For example, your organization might own the domain, company.com, but it might also own company.org, company.se and company.de. If you want to be able to receive email for all these domains, you will have two options:
Maximum size (MB)
If this value has been specified (is not 0), the system administrator and the domain owner will be prevented from adding accounts so that the total size of all accounts exceeds this value. If you have specified 500MB, the total size of all messages in the domain will not exceed 500MB.
Maximum message size
If specified, hMailServer will reject messages larger than this size.
Maximum size of accounts (MB)
If this value has been specified (is not 0), the server administrator and the domain owner will be prevented from adding accounts with a total size larger than this value.
Number of accounts, aliases and distribution lists
Using these settings, you can limit the number of accounts, aliases and distribution lists server administrators and domain owners can create in this domain.
On the signature tab, you can configure hMailServer to add a signature to all email sent from this domain. It's possible to enter both a plain text version and a HTML version of the signature. If no HTML signature is specified, hMailServer will use the plain text signature as HTML signature as well.
There are some known design limitations with the current implementation of the signature functionality. Please read the upgrade documentation
This tab contains the advanced settings for the domain. You normally don't need to modify these settings.
Use this option to enable plus addressing for this domain. To avoid confusion and configuration problems, only a limited set of characters are allowed for plus addresing.
Use this option to enable and disable grey listing for this domain.