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[tor-relays] Strange SMTP attempts from my tor relay

To: <tor-relays@xxxxxxxxxxxxxxxxxxxx>
Subject: [tor-relays] Strange SMTP attempts from my tor relay
From: Ole Rydahl via tor-relays <tor-relays@xxxxxxxxxxxxxxxxxxxx>
Date: Thu, 11 Jun 2026 07:53:28 +0200
Cc: Ole Rydahl <ole_rydahl@xxxxxxx>
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List-id: "support and questions about running Tor relays (exit, non-exit, bridge)" <tor-relays.lists.torproject.org>
Reply-to: "support and questions about running Tor relays (exit, non-exit, bridge)" <tor-relays@xxxxxxxxxxxxxxxxxxxx>
Thread-index: Adz22+2xc1p3M918QEqi6JbMXJiqxQ==

Hi,

I have noticed that my firewall registers connection attempts from my tor-server on port 465 and 587. My relay performs normally, so it appears that they have no significance for the operation.

Could somebody please explain the logic behind those SMTP connections? I am a bit puzzled!

/Ole Rydahl

OS: Fedora Linux 43 (Server Edition), Platform: Tor 0.4.9.8 on Linux

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