Am Mon, 5 Dec 2016 20:52:21 -0500
schrieb Alex :
> Hi,
>
> I have a postfix-3.0.5 system with a few hundred users. They have
> access to submission, webmail, and dovecot to send and receive mail.
>
> On occasion, user's local desktop are compromised, and with it their
> account on this system. T
On 06/12/16 01:52, Alex wrote:
> Hi,
>
> I have a postfix-3.0.5 system with a few hundred users. They have
> access to submission, webmail, and dovecot to send and receive mail.
>
> On occasion, user's local desktop are compromised, and with it their
> account on this system. This leads to their
I also limit the number of recipients allowed on an out-going email.
This blocks bulk spammers since they tend to put a lot of addresses on 1
envelope.
The number allowed will depend on your user's typical patters.
Mine is pretty low (between 10-20) since we tend to have small project
teams.
On Tue, Dec 06, 2016 at 08:59:56AM +0100, Julian Kippels wrote:
> Am Mon, 5 Dec 2016 20:52:21 -0500
> schrieb Alex :
>
> > I have a postfix-3.0.5 system with a few hundred users. They
> > have access to submission, webmail, and dovecot to send and
> > receive mail.
> >
> > On occasion, user's loc
Hi List,
I am running an application which is sending mail through Postfix
containing both a "From:" and a "Sender:" header.
For one specific address in "Sender:", I would like to swap the values
for "From:" and "Sender:".
For example:
The application dispatches a message
From: addre...@doma
luc...@dds.nl:
> Hi List,
>
> I am running an application which is sending mail through Postfix
> containing both a "From:" and a "Sender:" header.
>
> For one specific address in "Sender:", I would like to swap the values
> for "From:" and "Sender:".
>
> For example:
> The application dispatche
Last few days, I'm seeing large amount of failures in a log file for
domains using protection.outlook.com:
to=, relay=none, delay=13190, delays=13187/0.08/2.2/0,
dsn=4.4.3, status=deferred (Host or domain name not found. Name service
error for name=example-com.mail.protection.outlook.com type=
MRob:
> Last few days, I'm seeing large amount of failures in a log file for
> domains using protection.outlook.com:
>
> to=, relay=none, delay=13190, delays=13187/0.08/2.2/0,
> dsn=4.4.3, status=deferred (Host or domain name not found. Name service
> error for name=example-com.mail.protection.
> On Dec 6, 2016, at 1:44 PM, MRob wrote:
>
> Last few days, I'm seeing large amount of failures in a log file for domains
> using protection.outlook.com:
>
> to=, relay=none, delay=13190, delays=13187/0.08/2.2/0,
> dsn=4.4.3, status=deferred (Host or domain name not found. Name service error
On 12/06/2016 02:52 AM, Alex wrote:
> Hi,
>
> I have a postfix-3.0.5 system with a few hundred users. They have
> access to submission, webmail, and dovecot to send and receive mail.
>
> On occasion, user's local desktop are compromised, and with it their
> account on this system. This leads to the
Victor, Wietse,
On 2016-12-06 11:16, wie...@porcupine.org wrote:
MRob:
Last few days, I'm seeing large amount of failures in a log file for
domains using protection.outlook.com:
to=, relay=none, delay=13190,
delays=13187/0.08/2.2/0,
dsn=4.4.3, status=deferred (Host or domain name not found. N
On Tue, Dec 06, 2016 at 04:02:21PM -0800, MRob wrote:
> > This could a messed-up DNS resolver anywhere in the path, including
> > a bad resolv.conf file under /var/spool/postfix/etc, or some
> > 'security' filter that breaks connectivity to some DNS server.
>
> Victor suggested in a mail prior to
MRob:
> Having removed ipv6 from the question, I get the error I quoted above
> even for domains that do resolve using "dig" from the CLI of the same
> host. Why would there be that kind of discrepancy?
Not at all, just some intermediate resolver that messes up as I
suggested in my first reply.
On Tue, Dec 06, 2016 at 07:20:41PM -0500, Wietse Venema wrote:
> > Having removed ipv6 from the question, I get the error I quoted above
> > even for domains that do resolve using "dig" from the CLI of the same
> > host. Why would there be that kind of discrepancy?
>
> Not at all, just some int
On 2016-12-06 16:23, Viktor Dukhovni wrote:
On Tue, Dec 06, 2016 at 07:20:41PM -0500, Wietse Venema wrote:
> Having removed ipv6 from the question, I get the error I quoted above
> even for domains that do resolve using "dig" from the CLI of the same
> host. Why would there be that kind of disc
On Tue, Dec 06, 2016 at 04:56:58PM -0800, MRob wrote:
> > To be fair to the good folks at PowerDNS, the software in question
> > was an alpha version, that Ubuntu should probably not have shipped
> > in a prod release. I don't know of any similar issues in actual
> > releases of PowerDNS.
>
> Th
On 2016-12-06 17:14, Viktor Dukhovni wrote:
On Tue, Dec 06, 2016 at 04:56:58PM -0800, MRob wrote:
> To be fair to the good folks at PowerDNS, the software in question
> was an alpha version, that Ubuntu should probably not have shipped
> in a prod release. I don't know of any similar issues in
On Tuesday, December 06, 2016 04:56:58 PM MRob wrote:
> On 2016-12-06 16:23, Viktor Dukhovni wrote:
> > On Tue, Dec 06, 2016 at 07:20:41PM -0500, Wietse Venema wrote:
> >> > Having removed ipv6 from the question, I get the error I quoted above
> >> > even for domains that do resolve using "dig" fro
On Tue, Dec 06, 2016 at 08:47:27PM -0500, Scott Kitterman wrote:
> > I'm shocked that they have done such a thing. I
> > wonder if a post to their mailing list would get the attention of the
> > right person.
>
> There is almost certainly not a right person. PDNS is in the Universe
> section
>
On Wednesday, December 07, 2016 02:08:24 AM Viktor Dukhovni wrote:
> On Tue, Dec 06, 2016 at 08:47:27PM -0500, Scott Kitterman wrote:
> > > I'm shocked that they have done such a thing. I
> > > wonder if a post to their mailing list would get the attention of the
> > > right person.
> >
> > There
> On Dec 7, 2016, at 12:34 AM, Scott Kitterman wrote:
>
>> Instead of partly disabling DANE support, it seems to make more
>> sense to switch to unbound or BIND.
>
> I agree. I think most users don't understand the distinction between the
> parts of the archive.
Let's hope the word gets out
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