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...ot;ha4aa"}INBOX: [CLOSED] IMAP connection broken > > (server response) > > The date of the last rawlog line corresponds to an ssl debug log of > dovecot (from the last run): > > Oct 20 18:50:05 mail2 dovecot: imap-login: Debug: SSL error: SSL_read() > failed: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init It is an openssl compatibility issue introduced in OpenSSL 1.0.2f. The IMAP failures could be solved with the following patches, which are similar to what nginx uses (http://hg.nginx.org/nginx/rev/062c189fee20): For Dovecot 2.2.35: diff --git a/...

Hello, We upgraded one of our dovecot servers to debian stretch with dovecot 2.2.27 and since then one of our users has been experiencing random IMAP failures. We enabled raw logging at the server side and it shows normal IMAP commands/responses: 1507292522.222427 * 6 FETCH (FLAGS () BODYSTRUCTURE ("text" "plain" ("charset" "us-ascii") NIL NIL

...length=40 from=845 to=884 > 00000011 FETCH 6 (BODYSTRUCTURE FLAGS)\r > > and here ends the socat log. The date of the last rawlog line corresponds to an ssl debug log of dovecot (from the last run): Oct 20 18:50:05 mail2 dovecot: imap-login: Debug: SSL error: SSL_read() failed: error:140E0197:SSL routines:SSL_shutdown:shutdown while in init I added the patch "openssl: Clear error queue after an incomplete SSL_shutdown", recompiled the package but it did not help. Any help is highly welcomed! Best regards, Jozsef -- E-mail : kadlecsik.jozsef at wigner.mta.hu PGP key: http:/...