From 23df9a3f467b3dfebe41358bf6e78e65ce53bc19 Mon Sep 17 00:00:00 2001 From: M66B Date: Sun, 12 Nov 2023 07:58:11 +0100 Subject: [PATCH] Updated FAQ --- FAQ.md | 2 ++ index.html | 1 + 2 files changed, 3 insertions(+) diff --git a/FAQ.md b/FAQ.md index 8eb70aa00f..424c1bb0c5 100644 --- a/FAQ.md +++ b/FAQ.md @@ -2101,6 +2101,8 @@ Try to switch to port 993 (IMAP) or 465 (SMTP) with SSL/TLS. Android 8 Oreo and later [do not support](https://developer.android.com/about/versions/oreo/android-8.0-changes#security-all) SSLv3 anymore. There is no way to workaround lacking RC4 and SSLv3 support because it has completely been removed from Android (which should say something). +The error '*javax.net.ssl.SSLHandshakeException: Read error: ... TLSV1_ALERT_INTERNAL_ERROR*' means that Android and the email server share no common protocol versions and/or common ciphers. + Please [see here](https://developer.android.com/reference/javax/net/ssl/SSLSocket) for an overview of supported protocols and cipher suites by Android version. You can use [this website](https://ssl-tools.net/mailservers) or [this website](https://www.immuniweb.com/ssl/) to check for SSL/TLS problems of email servers. diff --git a/index.html b/index.html index afb1b02235..64d3f4b60c 100644 --- a/index.html +++ b/index.html @@ -1175,6 +1175,7 @@ X-Google-Original-From: Somebody <somebody+extra@example.org>

The error ‘Handshake failed … UNSUPPORTED_PROTOCOL or TLSV1_ALERT_PROTOCOL_VERSION or SSLV3_ALERT_HANDSHAKE_FAILURE …’ might be caused by enabling hardening connections or Bouncy Castle in the connection settings tab page, or by Android not supporting older protocols anymore, like SSLv3 and TLSv1.

The error ‘javax.net.ssl.SSLHandshakeException: Read error: … CERT_LENGTH_MISMATCH’ means that there is something wrong with the email server setup. Try to switch to port 993 (IMAP) or 465 (SMTP) with SSL/TLS.

Android 8 Oreo and later do not support SSLv3 anymore. There is no way to workaround lacking RC4 and SSLv3 support because it has completely been removed from Android (which should say something).

+

The error ‘javax.net.ssl.SSLHandshakeException: Read error: … TLSV1_ALERT_INTERNAL_ERROR’ means that Android and the email server share no common protocol versions and/or common ciphers.

Please see here for an overview of supported protocols and cipher suites by Android version.

You can use this website or this website to check for SSL/TLS problems of email servers.