Re: no shared cipher revisited

2022-09-28 Thread Lists Nethead
Quoting Viktor Dukhovni : On Wed, Sep 28, 2022 at 07:22:37PM +0200, Lists Nethead wrote: > Your server defaults to an ECDSA P-384 certificate, the client may not > support ECDSA at all, or may not support P-384 (P-256 is a more broadly > supported choice): > > $ posttls-

Re: no shared cipher revisited

2022-09-28 Thread Lists Nethead
Quoting Viktor Dukhovni : On Wed, Sep 28, 2022 at 06:47:39PM +0200, Lists Nethead wrote: >> smtpd_tls_protocols = >=TLSv1.2 > > That's not the default setting. > >> smtpd_tls_exclude_ciphers = aNULL > > This is only appeases clueless auditors, in realit

Re: no shared cipher revisited

2022-09-28 Thread Lists Nethead
Quoting Benny Pedersen : Lists Nethead skrev den 2022-09-28 18:47: smtpd_tls_protocols = >=TLSv1.2 Hm, what is the default then? put an # infront of this line in main.cf, then do a postfix reload simple ? :=) If this would enable everything from tls1, no.

Re: no shared cipher revisited

2022-09-28 Thread Lists Nethead
Quoting Viktor Dukhovni : On Wed, Sep 28, 2022 at 06:38:15PM +0200, Lists Nethead wrote: Hello again postfix-users, After Viktor gave really helpful advise re SSLv3, now on to the next problem, dealing with crypto is opening a can of worms, at least where I am. We cannot receive messages

no shared cipher revisited

2022-09-28 Thread Lists Nethead
Hello again postfix-users, After Viktor gave really helpful advise re SSLv3, now on to the next problem, dealing with crypto is opening a can of worms, at least where I am. We cannot receive messages from a Big Corp, our Postfix MX's responds with "no shared cipher". The configuration i

Re: Enable SSLv3 from a specific IP

2022-09-27 Thread Lists Nethead
Quoting Viktor Dukhovni : On Sun, Sep 25, 2022 at 10:24:23AM +0200, Lists Nethead wrote: > You probably do not need a dedicated port, just configure both an > RSA and a DSA certificate. Why you'd want to do this is a mystery, > an SMTP client that only supports DSS is rather

Re: Enable SSLv3 from a specific IP

2022-09-25 Thread Lists Nethead
Quoting Viktor Dukhovni : On Sat, Sep 24, 2022 at 01:22:30PM +0200, Lists Nethead wrote: I am tasked with what the subject says, to enable DHE-DSS-AES128-SHA SSLv3 Kx=DH Au=DSS Enc=AES(128) Mac=SHA1 from a specific IP. Note that while the cipher was first defined for use in SSLv3, it

Enable SSLv3 from a specific IP

2022-09-24 Thread Lists Nethead
Hello Postfix users, I am tasked with what the subject says, to enable DHE-DSS-AES128-SHA SSLv3 Kx=DH Au=DSS Enc=AES(128) Mac=SHA1 from a specific IP. I suppose that must be a lookup table but unsure about the syntax. Or, is smtpd_discard_ehlo_keyword_address_maps the way to go? Thankful f

transport maps lookup order

2017-12-10 Thread Lists Nethead
postfix-3.2.2 Case in question: transport_maps = hash:/usr/local/etc/postfix/transport, ldap:/usr/local/etc/postfix/ldap-transport.cf I had the (possibly erroneous) belief that Postfix searches the tables in the order given in main.cf and that the domain part is sufficient. What we wanted