With ISPConfig you can setup all your Mail-Accounts.

Create Email Domain

After login with your access data, go to Email → Domain → Add new Domain:

• Server
  According your Webhoster you can select different Email-Server.
• Domain
  Enter the Domain where you want to create Email-Accounts.
• Spamfilter
  Select global Domain Spamfilter.
• You can also create a DKIM-Entry which you can also add to your Registrar if you wish.

Create a Email Account

To create a new Email Account, go to Email → E-Mail Mailbox → Add new Email Mailbox:

• Mailbox
  
  • Name
    Enter the Name of the Mailbox, it´s shown at your receivers.
  • Email
    Enter the Part before @. If you setup more Email Domains, you can choose the Ending.
  • Password
  • Quota
    You have an available Email-Quota. Split it between all your Email Mailboxes so you did not exceed.
• Autoresponder
  Here you can enter an absence message, if you go on vacation for example.
• Mail Filter
  Here you can define your own filters, for example move incoming Mails with the subject "Invoices" to an own folder.
• Backup
  Choose your Backup options. We recommend:
  • Backup Intervall: Daily
  • Amount of Backups: min. 3

Special Anti-SPAM Settings

The following settings have already proven themselves to restrict some spam:

• In Email Mailbox
  
  • Spamfilter: Trigger happy
  • Activate Greylisting
• In Email Mailbox → Email Filter
  Move Spam Emails to the Junk folder.
  Please note to look also into this folder because it is possible that non Spam-Mails find their way into this folder!
• Spamfilter Whitelist / Blacklist
  Set individual Email addresses to the corresponding lists.