diff --git a/FAQ.md b/FAQ.md index 2081606ce5..7335f45a34 100644 --- a/FAQ.md +++ b/FAQ.md @@ -1102,6 +1102,15 @@ See also [this FAQ](#user-content-faq4). The error '*Handshake failed ... SSLV3_ALERT_ILLEGAL_PARAMETER*' is either caused by a bug in the SSL protocol implementation or by a too short DH key on the email server and can unfortunately not be fixed by FairEmail. +The error '*Handshake failed ... HANDSHAKE_FAILURE_ON_CLIENT_HELLO*' might be caused by the provider still using RC4, +which isn't supported since [Android 7](https://developer.android.com/about/versions/nougat/android-7.0-changes.html#tls-ssl) anymore. + +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). + +You can use [this website](https://ssl-tools.net/mailservers) to check for SSL/TLS problems of IMAP/SMTP servers. +