Revert e46c43f71ebd89b6ba95bfa1fcc1dfd7bfd07a3f...f86e6e43189222e1ec55d5aef2f83f176e0f54f1 on A mail server's 101
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@ -82,9 +82,9 @@ When it comes to the specifics of email exchange, we have to look at protocols a
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```txt
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┏━━━━━━━━━━ Submission ━━━━━━━━━┓┏━━━━━━━━━━━━━ Transfer/Relay ━━━━━━━━━━━┓
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┌─────────────────────┐ ┌┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┐
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MUA ----- STARTTLS ---> ┤(587) MTA ╮ (25)├ <-- cleartext --> ┊ Third-party MTA ┊
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MUA ----- STARTTLS ---> ┤(587) MTA ╮ (25)├ <-- cleartext ---> ┊ Third-party MTA ┊
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---- cleartext ---> ┤(25) │ | └┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┘
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|---------------------|
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|┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄┄|
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MUA <---- STARTTLS ---- ┤(143) MDA ╯ |
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<-- enforced TLS -- ┤(993) |
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└─────────────────────┘
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