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Enable and recommend port 465 for mail submission instead of port 587 (fixes #1849)

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Port 465 with "implicit" (i.e. always-on) TLS is a more secure approach than port 587 with explicit (i.e. optional and only on with STARTTLS). Although we reject credentials on port 587 without STARTTLS, by that point credentials have already been sent.
This commit is contained in:
Joshua Tauberer
2021-05-09 10:11:40 -04:00
parent e283a12047
commit d510c8ae2a
11 changed files with 42 additions and 24 deletions
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CHANGELOG.md
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@@ -6,6 +6,7 @@ In Development
Mail:
* Sending mail is now possible on port 465 with the "SSL" or "TLS" option in mail clients, and this is now the recommended setting. Port 587 with STARTTLS remains available but should be avoided.
* Roundcube's login cookie is updated to use a new encryption algorithm (AES-256-CBC instead of DES-EDE-CBC).
DNS: