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mta-sts/.well-known/mta-sts.txt
2025-06-08 13:52:10 +06:00

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version: STSv1
mode: [enforce|testing|none] # 1. Decide your mode.
mx: mx1.your_domain.tld # 2. Add your primary mailserver hostname (see MX records in your DNS)
mx: mx2.your_domain.tld # 3. If you have secondary mailservers, add one line for each.
# In case all servers share the same subdomain, you may also use wildcards like *.mail.protection.outlook.com
max_age: 1209600 # 4. Depending on your mode above, 1209600 seconds = 2 weeks might be a good value.
# 5. Remove all the comments (if that wasn't obvious to you).