- Ralph Seichter via dovecot schrieb am 06.09.23 um 22:43 Uhr:
Hello,
I cannot seem to send STARTTLS protected mail to talvi.dovecot.org, and I was wondering if anybody else sees similar problems:
Sep 6 22:29:10 ra postfix/smtp[15748]: SSL_connect error to talvi.dovecot.org[94.237.105.223]:25: -1 Sep 6 22:29:10 ra postfix/smtp[15748]: warning: TLS library problem: error:0A000417:SSL routines::sslv3 alert illegal parameter:../openssl-3.0.9/ssl/record/rec_layer_s3.c:1586:SSL alert number 47: Sep 6 22:29:10 ra postfix/smtp[15748]: 1AAE4BE0031: Cannot start TLS: handshake failure Sep 6 22:29:10 ra postfix/smtp[15748]: SSL_connect error to talvi.dovecot.org[2a04:3545:1000:720:acc1:5bff:fe5e:459]:25: -1 Sep 6 22:29:10 ra postfix/smtp[15748]: warning: TLS library problem: error:0A000417:SSL routines::sslv3 alert illegal parameter:../openssl-3.0.9/ssl/record/rec_layer_s3.c:1586:SSL alert number 47: Sep 6 22:29:10 ra postfix/smtp[15748]: 1AAE4BE0031: to=dovecot@dovecot.org, relay=talvi.dovecot.org[2a04:3545:1000:720:acc1:5bff:fe5e:459]:25, delay=1.6, delays=0.02/0.01/1.6/0, dsn=4.7.5, status=deferred (Cannot start TLS: handshake failure) Sep 6 22:30:05 ra postfix/smtpd[15616]: timeout after END-OF-MESSAGE from localhost[127.0.0.1] Sep 6 22:30:05 ra postfix/smtpd[15616]: disconnect from localhost[127.0.0.1] ehlo=1 xforward=1 mail=1 rcpt=1 data=1 commands=5
The originating server uses Postfix 3.8.2 and OpenSSL library 3.0.9. To be able to send messages to dovecot.org at all, I had to use Postfix's "smtp_tls_policy_maps" setting to explicitly disable TLS for this destination domain.
Your openssl-3.0.9 (I suppose gentoo stable?) will not allow TLSv1 or sslv3 connections bei default anymore.
Wild guess: you need to explicitely allow for example DEFAULT@SECLEVEL=0 ciphersuite in postfix to make *your* openssl accept this remote sslv3 connection
Cheers -Marc
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