How to Set Up Your Own Domain on Mxsec Servers
By Anders Yuran - 04/10/2026 - 0 comments
How to Set Up Your Own Domain on Mxsec Servers
Prerequisite: You must be able to manage DNS records for your domain (or have your DNS provider/registrar do it for you).
The following DNS records must be added to your domain's DNS configuration:
| Type | Host / Name | Value / Points To |
|---|---|---|
| A Record | mail.yourdomain.com |
Mxsec Mail Server IP (provided in your activation email) |
| A Record | webmail.yourdomain.com |
Mxsec Server IP (provided in your activation email) |
| MX Record | yourdomain.com (or @) |
mail.yourdomain.com (Priority: 10) |
| TXT Record | dkim._domainkey.yourdomain.com |
DKIM public key (provided in your activation email) |
| TXT Record | _dmarc.yourdomain.com |
DMARC policy record (provided in your activation email) |
| TXT Record | yourdomain.com (or @) |
SPF authorization record (provided in your activation email) |
Note: Once your new DNS settings have fully propagated, we will finalize setting up your new email accounts.
How to Activate Your New Email Account
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Check Your InboxLook for an activation email sent to your contact address containing your new email credentials and a temporary password.
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Log In to WebmailGo to webmail.mxsec.org and log in using your new email address and temporary password.
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Set a New PasswordOn your first login, you will be automatically prompted to create a new, secure password.
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Start Using WebmailOnce your password is updated, your webmail account is active and ready to use.
Setting Up an Email Client (Outlook, Thunderbird, Mobile, etc.)
If you prefer to use an email app instead of webmail, use the following server settings:
Incoming Mail (IMAP)
- Server:
mail.+ your domain (e.g.,mail.pissouri.org) - Port:
143 - Security / Encryption:
STARTTLS - Username: Your full email address
- Password: Your new password
Outgoing Mail (SMTP)
- Server:
mail.+ your domain (e.g.,mail.pissouri.org) - Port:
587 - Security / Encryption:
STARTTLS - Authentication Required: Yes
- Username / Password: Full email address & your new password
