<div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr"><div dir="ltr">I disabled postscreen and enabled logging, I have all ports working except 993, in log when I try to connect on port 993 </div><div dir="ltr"><br><div>dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=10.244.0.24, lip=10.244.0.108, TLS handshaking: SSL_accept() failed: error:1408F10B:SSL routines:ssl3_get_record:wrong version number, session=<rEH6ocGoOtUK9AAY><br></div><div><br></div><div>I found that I could disable ssl3 by "ssl_protocols = !SSLv2 !SSLv3" but this option is not working (dovecot 2.3.10.1 (a3d0e1171)</div></div></div></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Jun 23, 2020 at 6:27 PM Michael Peddemors <<a href="mailto:michael@linuxmagic.com">michael@linuxmagic.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">On 2020-06-23 8:24 a.m., Alexander Dalloz wrote:<br>
> Am 23.06.2020 um 07:33 schrieb Bernardo Reino:<br>
>> If you use postfix a "workaround" is to temporarily disable <br>
>> postscreen, which IIRC is the one (rightly) complaining about the <br>
>> improper pipelining.<br>
>><br>
>> Cheers,<br>
>> Bernardo Reino<br>
> <br>
> No, submitting on SMTP port 25 would be the wrong step. There's <br>
> submission on port 587 or submissions (formerly called smtps) on port <br>
> 465 for taking MUA requests authenticating and submitting a message.<br>
> <br>
> Alexander<br>
> <br>
<br>
+1, you should even go farther and disable authentication on port 25<br>
<br>
<br>
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