PowerMTA Support Forum
- December 12, 2025, 06:40:13 PM
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News:
PowerMTA 6.0r4 is out!!!! Please contact support@port25.com for a license and download access.
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- List-Unsubscribe header critical for delivery and how we help PMTA users
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- PowerMTA Support Forum >
- General Category >
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- List-Unsubscribe header critical for delivery and how we help PMTA users