On May 21, 2018 7:28:00 PM jmct wrote:
I seem to have fixed this.
It appears that DNS WAS the cause. Resolution was not happening to me when
doing requests, but when Postfix was attempting to make the same request, it
appears to have failed from time to time.
I saw this in the logs:
May 21
> On May 21, 2018, at 5:16 PM, Sean Son
> wrote:
>
> lmtp_tls_mandatory_protocols = !SSLv2
> lmtp_tls_protocols = !SSLv2
> smtp_tls_mandatory_protocols = !SSLv2
> smtp_tls_protocols = !SSLv2
> smtpd_tls_mandatory_protocols = !SSLv2
> smtpd_tls_protocols =
>
> i was informed by our security te
On Mon, May 21, 2018 at 2:08 PM, Viktor Dukhovni wrote:
>
>
> > On May 21, 2018, at 1:16 PM, Sean Son
> wrote:
> >
> > Hello all
> >
> > I have opportunistic TLS (offering STARTLS) configured in my main.cf
> file. I have been tasked to disable SSLv2 and SSLv3 as well as disable
> medium streng
> On May 21, 2018, at 1:16 PM, Sean Son
> wrote:
>
> Hello all
>
> I have opportunistic TLS (offering STARTLS) configured in my main.cf file.
> I have been tasked to disable SSLv2 and SSLv3 as well as disable medium
> strength ciphers (to use high strength ones instead) in my postfix serv
On 21 May 2018, at 13:16 (-0400), Sean Son wrote:
Hello all
I have opportunistic TLS (offering STARTLS) configured in my main.cf
file. I have been tasked to disable SSLv2 and SSLv3 as well as
disable
medium strength ciphers (to use high strength ones instead) in my
postfix
server. If I wa
Hello all
I have opportunistic TLS (offering STARTLS) configured in my main.cf
file. I have been tasked to disable SSLv2 and SSLv3 as well as disable
medium strength ciphers (to use high strength ones instead) in my postfix
server. If I was to add the following to my main.cf:
smtpd_tls_mandat
I seem to have fixed this.
It appears that DNS WAS the cause. Resolution was not happening to me when
doing requests, but when Postfix was attempting to make the same request, it
appears to have failed from time to time.
I saw this in the logs:
May 21 15:28:53 mail postfix/scache[13448]: statist
Thanks for all the replies.
Yes, DNS is working as expected. I can resolve the relay host's address no
problem.
There is a firewall between them. Traffic is open between both sides. My
postfix server is running on 25587/tcp and the relay hosts are both
listening on the same. I can successfully t
On 05/21/2018 07:31 AM, Stephen Satchell wrote:
On 05/21/2018 07:06 AM, Postfix User wrote:
I would suggest that you read
this:http://www.postfix.com/DEBUG_README.html
Suggest adding a section "Using a remote filesystem", asking if the
clocks between the PostFix server and the remote file sy
Stephen Satchell:
> On 05/21/2018 07:06 AM, Postfix User wrote:
> > I would suggest that you read this:http://www.postfix.com/DEBUG_README.html
>
>
> Suggest adding a section "Using a remote filesystem", asking if the
> clocks between the PostFix server and the remote file system are
> synchron
On 05/21/2018 07:06 AM, Postfix User wrote:
I would suggest that you read this:http://www.postfix.com/DEBUG_README.html
Suggest adding a section "Using a remote filesystem", asking if the
clocks between the PostFix server and the remote file system are
synchronized.
[An on-line version of this announcement will be available at
http://www.postfix.org/announcements/postfix-3.3.1.html]
Fixed in Postfix 3.3:
* Postfix did not support running as a PID=1 process, which
complicated Postfix deployment in containers. The "postfix
start-fg" command will now
On Sun, 20 May 2018 15:08:11 -0700 (MST), jmct stated:
>Hi there,
>
>I've set up a mail server that should be relaying messages to a different
>cluster of Postfix boxes. When I attempt to send a message to the first box,
>mail sits in the active queue for 5 minutes before being (successfully)
>rel
Matus UHLAR - fantomas:
> On 20.05.18 15:08, jmct wrote:
> >I've set up a mail server that should be relaying messages to a different
> >cluster of Postfix boxes. When I attempt to send a message to the first box,
> >mail sits in the active queue for 5 minutes before being (successfully)
> >relayed
On 20.05.18 15:08, jmct wrote:
I've set up a mail server that should be relaying messages to a different
cluster of Postfix boxes. When I attempt to send a message to the first box,
mail sits in the active queue for 5 minutes before being (successfully)
relayed to the cluster of Postfix boxes. wh
On May 20, 2018, at 7:24 PM, John Levine wrote:
>
> Has anyone actually seen it happen in the
> wild in the past decade?
yes, web.de, gmx.net and other domains operated by 1&1 for example.
or freemail.de or all the domains hosted by Eleven (today Cyren)
For that it /is/ a huge problem in Germ
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