Re: TLS problem: no shared cipher?

2020-05-18 Thread Roland Freikamp
On 2020-05-17 12:07:29 -0600, @lbutlr wrote: > > postfix/smtpd[17880]: connect from ...[...] > > postfix/smtpd[17880]: SSL_accept error from ...[...]: -1 > > postfix/smtpd[17880]: warning: TLS library problem: error:1417A0C1:SSL > > routines:tls_post_process_client_hello:no shared > > cipher:ssl/

Re: TLS problem: no shared cipher?

2020-05-15 Thread Roland Freikamp
On 2020-05-15 16:55:50 -0400, Viktor Dukhovni wrote: > > Or could it be that my certificate is ECDSA, but the other server > > maybe only supports RSA? > > That's quite plausible, and would have been my guess even before you > mentioned this. For interop, you need an RSA cert, and then you can >

Re: TLS problem: no shared cipher?

2020-05-15 Thread Roland Freikamp
> grepp'ed with 'ciphers': > > smtp_tls_ciphers = medium > > smtp_tls_exclude_ciphers = aNULL,eNULL,CAMELLIA > > smtp_tls_mandatory_ciphers = medium > > tls_preempt_cipherlist = yes > > Before asking for help, try removing those settings. I've removed them; it did not change anything. The debug-l

Re: TLS problem: no shared cipher?

2020-05-15 Thread Roland Freikamp
On 2020-05-15 12:56:18 -0400, Wietse Venema wrote: > Roland Freikamp: > > Hi, > > > > I recently upgraded my mailserver-linux-system, which also upgraded Postfix > > from 3.4.6 to 3.4.9, and renewed the TLS-certificates (Let's Encrypt). > > The Postfix-config

TLS problem: no shared cipher?

2020-05-15 Thread Roland Freikamp
Hi, I recently upgraded my mailserver-linux-system, which also upgraded Postfix from 3.4.6 to 3.4.9, and renewed the TLS-certificates (Let's Encrypt). The Postfix-configuration did not change. Since then, some mails could not be delivered to my server, because it seems that the mailservers could n

postscreen with IP-ranges?

2019-11-12 Thread Roland Freikamp
Hi, I'm using postscreen on a mailserver. Unfortunately, this does not work with some bigger mail providers, since they send the mail from a random host in their mail-server-cluster, so postscreen sees a new IP for each retry, and so sometimes never accepts the mail. Is there a way around this?