checker-smtp
Copyright (c) 2026 The happyDomain Authors

This product is licensed under the MIT License (see LICENSE).

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Third-party notices
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This product includes software developed as part of the checker-sdk-go
project (https://git.happydns.org/happyDomain/checker-sdk-go), licensed
under the Apache License, Version 2.0:

    checker-sdk-go
    Copyright 2020-2026 The happyDomain Authors

This product reuses the tls.endpoint.v1 discovery contract from the
checker-tls project (https://git.happydns.org/happyDomain/checker-tls),
licensed under the MIT License.

This product includes software from the miekg/dns project
(https://github.com/miekg/dns), licensed under the BSD 3-Clause License:

    Copyright (c) 2009 The Go Authors. All rights reserved.
    Copyright (c) 2011 Miek Gieben. All rights reserved.
    Copyright (c) 2014 CloudFlare. All rights reserved.

You may obtain a copy of the Apache License 2.0 at:
    http://www.apache.org/licenses/LICENSE-2.0
