Hosted Voice & PBX

    DNS Records

    The VoIP Help Page Team·2 min read·Last updated: March 14, 2026

    This article provides essential information for configuring DNS records, including CNAME, SPF, and Native Fax records, which are necessary for the successful operation of the platform. It is primarily intended for White Label Partners.

    Scope

    Several DNS records need to be created for the successful use of our platform. This must be done in advance of obtaining an SSL certificate.

    Requirements

    Do not use Cloudflare Proxies or any other caching service. They will prevent certain features from functioning properly. Disabling Cloudflare Proxies feature will usually resolve DNS related issues.

    CNAME Records

    Create a DNS CNAME record that points to nms-portals.ucaasnetwork.com. The entry you use should match the WLP Branding Form.

    SPF Records

    Partners using their own SMTP servers to send and receive emails will need to configure SPF records according to best practices by their SMTP provider.

    For partners using the Postmark server included with our platform, SPF setup is handled by Postmark as long as the below Return-Path domain is configured.

    HostnameTypeValue
    pm-bouncesCNAMEpm.mtasv.net

    If you wish to configure your own Return-Path domain, you will need to add the below SPF record.

    v=spf1 a mx include:spf.mtasv.net ~all
    

    NATIVE FAX DNS RECORDS

    1. 1
      CNAME Record
      1. 1
        Hostname: fax.yourdomain.com
      2. 2
        Value: fax.ucaasnetwork.com
    2. 2
      MX Record
      1. 1
        Hostname: fax.yourdomain.com
      2. 2
        Value: fax.yourdomain.com

    Note: Some hosting providers may not let you set MX records directly to a CNAME. If that is the case, use the IP of the Fax Server, 66.172.52.16.

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