kind of authorization.
--------
Thomas Berger
- Certified Linux/Cisco Networking Engineer -
BOREUS Rechenzentrum GmbH
Zur Schwedenschanze 2
D - 18435 Stralsund
Germany
Phone:+49 (0) 38 31 - 36 76 415
Fax: +49 (0) 38 31 -
> I must confess that the tcpdump output is over my head. Any help would be
> appreciated. I see a lot of checksums marked bad and "incorrect" but I have
> no idea how to fix it.
> Justin T
Q 11.1: Why am I seeing lots of packets with incorrect TCP checksums?
A: If the packets that have incorr
solution:
- Use the submission port for authenticated clients
- only allow server2server communication on port 25
- use a firewall to block incomming traffic to the submission port
(- use a firewall to block all traffic from dynamic ipranges to port 25)
Greetings
Thomas Berger
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Description: This is a digitally signed message part.
Thanks for the replies.
I forgotten some details in my last mail:
Our current configuration looks like this:
[outter-postfix] (MX, Spamfilter, virus scanner ...) <=> [inner-postfix]
(expands the virtual recipients, delivers mails to different internel MTA's)
<=> Exchange Server (holds the user
internal
recipients. As we have only virtual domains on this mailsystem, there is no way
to send to a local user.
Greetings from Germany,
--------
Thomas Berger
- Certified Linux/Cisco Networking Engineer -
BOREUS Rechenzent
popcorn? Anybody?
Am Freitag, 27. Mai 2011, 13:49:02 schrieb Thijssen:
> On Fri, May 27, 2011 at 00:08, wrote:
> > On Fri, 27 May 2011 00:03:26 +0200, Jeroen Geilman wrote:
> >>
> >> On 05/26/2011 11:58 PM, Reindl Harald wrote:
> >>>
> >>> can somebody please remove the idiots from LinkedIn fro
Hi Kurniawan,
this is the default. Please have a look at the great docs:
http://www.postfix.org/SMTPD_ACCESS_README.html
Greetings,
Thomas
Am Freitag, 27. Mai 2011, 09:40:24 schrieb Kurniawan Junaidy:
> Hi folks,
>
> I am not able to send email through my postfix server by using any
> exter
is as bad as a real spamserver.
Greetings from Germany,
--------
Thomas Berger
- Certified Linux/Cisco Networking Engineer -
BOREUS Rechenzentrum GmbH
Zur Schwedenschanze 2
D - 18435 Stralsund
Germany
Phone:+49 (0) 38 31 - 36 76
> what problem are you trying to solve?
> the default config doesn't reject naked IPs in helo.
I descriped the reason why we have to accept such naked ips in my last mail.
To the background:
The inbound mailsystem for one of our customers was on heavy load around the
clock. So we set helo_ and c
> the RFC's are nice but in this days everybody who maintains a mailserver
> has to look that HELO is a vild hostname which resolves in both directions
> or has not to wonder if his mails are dropped!
>
> not all things that are not explicit forbidden are well behavior!
That's right, but does not
o allow IP's in the HELO?
Why is permit_naked_ip_address deprecated this way?
Sincerely,
--------
Thomas Berger
- Certified Linux/Cisco Networking Engineer -
BOREUS Rechenzentrum GmbH
Zur Schwedenschanze 2
D - 18435
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