The FilterMX host tells the OpenSRS email filters where to deliver mail after it has been filtered. You set it on the domain so that filtered messages reach the correct destination mail server. This article explains what the FilterMX host is and how to set it in both the Control Panel and the Mail Administration Console (MAC).
About the FilterMX host
A Mail Exchange (MX) record is the line in a DNS zone file that directs email to the appropriate mail server, telling the rest of the internet where a mailbox is located. The FilterMX host is the destination for mail that passes through Filter-type mailboxes after the OpenSRS filters process it.
Note: Standard Mailbox accounts do not require a FilterMX host. This setting is only needed for Filter accounts.
Before you begin
- Inbound port. Know the hostname or IP address of your target mail server and the inbound port that accepts connections, usually port 25.
Set the FilterMX host in the Control Panel
- In the Email section of the Control Panel, click the Email Domains tab.
- Click the domain you want to modify, then click the Settings tab.
- In the Domain Overview section, click Edit.
- In the Filter MX Host field, enter the hostname or IP address of the target mail server, including the inbound port, for example mail.mymailserver.com:25.
- Click Save.
Set the FilterMX host in the MAC
- Log in to the Mail Administration Console (MAC).
- Navigate to the domain you want to modify.
- In the FilterMX field, enter the host.
- Click Update.
Tip: The OpenSRS Email Service sends filtered mail from a block of IP addresses. Add these IP addresses to your server's allow list so filtered mail is accepted.
Next steps
- Manage spam settings at the company, domain, and mailbox levels
- Release messages from the quarantine spam filter
Questions? Contact OpenSRS Support.
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