On Mon, Nov 30, 2020 at 04:44:17PM -0300, SysAdmin EM wrote:
> It seems strange to me because the connection was working correctly and no
> changes have been made to the settings.
The *remote* server is malfunctioning, so your settings are largely irrelevant.
> Here the configuration of the Exch
Thanks for the reply.
The configuration I am currently using is the following:
smtp_tls_exclude_ciphers = MD5,SRP,PSK,aDSS,kECDH,kDH,SEED,IDEA,RC2,RC5,RC4
smtp_tls_protocols = !SSLv2:!SSLv3
smtpd_tls_cert_file = /etc/pki/tls/certs/linux.ferozo.com.pem
smtpd_tls_key_file = /etc/pki/tls/private/lin
On Mon, Nov 30, 2020 at 02:50:43PM -0300, SysAdmin EM wrote:
> Nov 30 14:43:58 smarthost04-ded postfix-out/smtp[31323]: 0F6EE920CBC:
> Cannot start TLS: handshake failure
> Nov 30 14:43:58 smarthost04-ded postfix-out/smtp[31323]: 0F6EE920CBC: to=<
> fvid...@exchange.infoauto.com.ar>, relay=exet02.
> On Mar 27, 2017, at 1:09 PM, Mark Wise wrote:
>
> Really sorry.
> http://postfix.1071664.n5.nabble.com/Postfix-cannot-start-tls-handshake-failure-td89684.html
You'll need to join the postfix-users list via majord...@postfix.org,
as explained at http://www.postfix.org/lists.html. I and other
Thank you Viktor, with your configuration changes now it works again!
Indeed, Exchange is running on Windows Server 2003 R2 and an upgrade is
overdue. After two years of delay, finally it will get upgraded in two
months.
--
View this message in context:
http://postfix.1071664.n5.nabble.com/Cann
On Thu, Sep 15, 2016 at 04:37:47AM -0700, fleon wrote:
> After two years of successful emails sent by postfix through our exchange
> 2007 server i have started having problems. I did update debian 7 to debian
> 8, so i don't know what postfix/openssl version i had back then.
In Debian 8 you have
For additional clarification, i was able to telnet to our exhange server and
authenticate to it just fine:
telnet mar-exch01 25
Connected to mar-exch01.mydomain.com.
Escape character is '^]'.
220 mar-exch01.mydomain.com Microsoft ESMTP MAIL Service ready at Thu, 15
Sep 2016 08:21:03 -0400
EHLO
250
On 2015-05-20 11:32, King Cao wrote:
Dears,
Hi,
Currently my postfix need to delivery mails to exchange 2003 and
encounter handshake failure issue when setting up the TLS connection.
posttls-finger failed but openssl succeeded. The remote exchange only
support cipher: "RC4-SHA".
The "RC4-SH
> On May 1, 2015, at 12:01 AM, Viktor Dukhovni
> wrote:
>
> On Fri, May 01, 2015 at 04:51:03AM +, Viktor Dukhovni wrote:
>
>> For this server, you need a more "compact" cipherlist as a work-around.
>>
>> smtp_tls_exclude_ciphers =
>> #
>> # Disable MD5, DSA
On Fri, May 01, 2015 at 04:51:03AM +, Viktor Dukhovni wrote:
> For this server, you need a more "compact" cipherlist as a work-around.
>
> smtp_tls_exclude_ciphers =
> #
> # Disable MD5, DSA, SRP and PSK, and the "exotic" fixed DH
> cipher suites.
>
On Thu, Apr 30, 2015 at 08:28:21PM -0700, Tom Johnson wrote:
> > That aside, even with the "wrong" MX host, I still get successful
> > connections. Perhaps you're behind some sort of firewall that
> > proxies TLS and disconnects when it does not like the peer certificate:
> >
> > $ posttls-finge
On Apr 230, 2015, at 2:41:53 PM, Viktor Dukhovni wrote:
> > And I've tried this, thinking that it could be an issue with the selected
> > ciphers, \
> > but it makes no difference:
> > smtp_tls_exclude_ciphers = 3DES DES
>
> The symptom with broken 3DES with Microsoft systems is not a
> hand
On Wed, Apr 29, 2015 at 05:57:36PM -0700, Tom Johnson wrote:
> I have a basic postfix setup that's been working fine for a long time,
> but recently, I've been seeing errors with a number of sites:
>
>"Cannot start TLS: handshake failure"
>
> Here are some specific sites where I'm seeing th
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