Every email account in hMailServer must belong to a domain. The domains specified in hMailServer can be local network domains or global internet domains such as hMailServer.com.
The name of the domain. To be considered valid, a domain name must include a dot. You must set up your DNS servers so that email can be sent to your mail server.
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:
- Add all four domains to hMailServer. The problem with this is that you then have to add every email account 4 times, once for each domain.
- Add company.com as a domain, and then, under it, in the Names-tab, add company.org, company.se and company.de. That is, you add company.org, company.se and company.de as aliases of company.com. That, usually, is the route most users prefer.
If you set up a domain named example.com, and an alias named example.net, your server will accept email for both email@example.com and firstname.lastname@example.org. Your users will be able to log on as both email@example.com and firstname.lastname@example.org as well.
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.
It is possible to use the macros %User.FirstName% and %User.LastName% in signatures. These macros will be replaced with the users first and last name as specified in the account settings.
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.
Private key file
The private key to use when signing messages with DKIM. This must be a file existing on the local file system, readable by hMailServer, and the file must not have a password set.
Selector to usew for signing. This is used as a namespace dividor for large domains.
Choose between simple and relaxed canonicalization method. If you choose the simple canonicalization method, the signed headers of the message must not be modified at all. If a new line is added in an header the verification will fail. Choose the relaxed canonicalization method if you want to allow minor modifications to header li
Choose between simple and relaxed canonicalization method. If you choose the simple canonicalization method, the body of the message must not be modified at all. Choose the relaxed canonicalization method if you want to allow minor modifications to the body.
Choose between the algorithms SHA1 and SHA256. SHA256 is encouraged since it gives higher security than SHA1. Senders of low-security messages such as newsletters may want to use SHA1 instead since it requires less CPU resources.
This tab contains the advanced settings for the domain. You normally don't need to modify these settings.
If you specify a catch-all address, hMailServer will forward all email with invalid recipients on the domain to this account.
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.