Sender Policy Framework (SPF) is an email authentication protocol that helps prevent unauthorized sources from sending email on behalf of your domain. It works by specifying which mail servers are allowed to send email for your domain, helping reduce spoofing and phishing attempts.
N-able Mail Assure supports SPF by checking the sending server’s IP against your domain’s published SPF record. To ensure email is properly authenticated and delivered, you need to configure your SPF record to include all legitimate sending sources.
This guide explains how to configure SPF correctly to work with N-able Mail Assure.
Important: N-able Mail Assure uses different SPF records depending on your region. To ensure accurate authentication and delivery, you must include the correct SPF include statement based on the region where your Mail Assure instance is hosted.
Refer to the list below and choose the SPF record that matches your region. If you’re unsure which region applies to your setup, check your Mail Assure portal settings or contact your system administrator.
These regional specific records are only to be used if you require a reduction in the scope of allowed IPs to a smaller geographic region.
Region | Value |
Global | spf.mtaroutes.com |
EU | spf-eu.mtaroutes.com |
US | spf-us.mtaroutes.com |
UK | spf-uk.mtaroutes.com |
AU | spf-au.mtaroutes.com |
CA | spf-ca.mtaroutes.com |
ZA | spf-za.mtaroutes.com |
Note: If you’re already using Sendmarc for SPF management, simply copy ‘include:spf.mtaroutes.com’ and follow the steps here.
To authorize N-Able Mail Assure to send emails on your domain’s behalf:
Example of an updated SPF record:
Host | Type | Value |
---|---|---|
@ or blank | TXT | v=spf1 include:another.net include:spf.mtaroutes.com ~all |
Example of a new SPF record:
Host | Type | Value |
---|---|---|
@ or blank | TXT | v=spf1 include:spf.mtaroutes.com ~all |
Allow up to 48 hours for DNS propagation, depending on your DNS host.
For detailed instructions on how to update your SPF record through Sendmarc, refer to the Sendmarc SPF Setup Documentation.
Refer to N-able Mail Assure’s official documentation for SPF setup here.
Find out how to configure your N-able Mail Assure DKIM settings here.