Re: is it possible to change the openssl security level?

2021-09-23 Thread David Mandelberg
s: Viktor is correct that this whole thing is a really bad idea for interoperability. I don't recommend this workaround in general, I just think it'll work for what I'm trying to do, which is probably not a typical use case. Op 23-09-2021 om 22:49 schreef David Mandelberg: Op

Re: is it possible to change the openssl security level?

2021-09-23 Thread David Mandelberg
Op 23-09-2021 om 22:26 schreef Viktor Dukhovni: On Thu, Sep 23, 2021 at 10:02:26PM -0400, David Mandelberg wrote: With the settings below, postfix 3.5.6 and openssl 1.1.1k successfully connected to a server with a 2048-bit RSA key, which should be disallowed by openssl's security le

is it possible to change the openssl security level?

2021-09-23 Thread David Mandelberg
Hi, With the settings below, postfix 3.5.6 and openssl 1.1.1k successfully connected to a server with a 2048-bit RSA key, which should be disallowed by openssl's security level 4. tls_high_cipherlist = DEFAULT:!eNULL:!aNULL:@SECLEVEL=4:@STRENGTH smtp_tls_mandatory_ciphers = high When I use o

Re: [Patch] lmtp_tls_wrappermode documentation

2021-09-23 Thread David Mandelberg
Thank you! Op 23-09-2021 om 13:44 schreef Viktor Dukhovni: On Thu, Sep 23, 2021 at 01:19:57PM -0400, David Mandelberg wrote: Is lmtp_tls_wrappermode safe to use even though it's not documented? Yes, it is safe to use. The SMTP and LMTP client code Postfix is largely a single code base

lmtp_tls_wrappermode

2021-09-23 Thread David Mandelberg
Hi, I was looking for a way to use implicit TLS with LMTP, similar to `smtp_tls_wrappermode = yes`. I don't see any mention of lmtp_tls_wrappermode in http://www.postfix.org/postconf.5.html but https://github.com/vdukhovni/postfix/blob/f246147ec54bb2b79ac84522d1d1a6c2b1664bd6/postfix/src/globa