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Yes, and yes. Click the three dots icon in the top right (next to the star icon etc) and click "Show original". Look for the Received: header added by Google's
by aaronmdjones 1y ago
Yes, and yes. Click the three dots icon in the top right (next to the star icon etc) and click "Show original". Look for the Received: header added by Google's servers. If it says SMTP, it was a very old MTA on the other side. If it says ESMTP, it was newer. If it says SMTPS or ESMTPS, it was secured with TLS; then it will also say the TLS version and ciphersuite below it.
- gpvos 1y agoHmm, so for ESMTP it doesn't tell you the ciphersuite but otherwise it does.
- aaronmdjones 1y agoNo. SMTP and ESMTP are not using TLS, so there is no ciphersuite. SMTPS and ESMTPS do use TLS, so it will say which ciphersuite.