Dear everyone,
It's my first posting on mailing list so please accept my apologies for any
"gaps" that may appear until I get the hang of the "way things should be
said"
Case Scenario
Esxi implementation hosting the following
ZoneOS ( url of implementation if any)
===
reply
Stan Hoeppner put forth on 5/28/201 5:42 AM:
>The vmxnet 'NIC' is a virtual device, strictly a software driver. The
>vmxnet driver communicates with the ESX kernel at the speed of system
>memory, which on modern servers is over 10x faster than the 10 Gbe
>signaling rate. There is no su
>Are there any firewalls between the Postfix and Exchange Server ?
>
>Mihira
Yes there is, shorewall as implemented on the link provided
http://flurdy.com/docs/postfix/
--
Ioannis
__ Information from ESET Smart Security, version of virus signature
database 5152 (20100528)
>>Are there any firewalls between the Postfix and Exchange Server ?
>>
>>Mihira
>
>Yes there is, shorewall as implemented on the link provided
>http://flurdy.com/docs/postfix/
>
>--
>Ioannis
As well as the shorewall in the three interface firewall
http://www.shorewall.net/three-interface.htm
_
Stan Hoeppner put forth on 5/28/2010 06:41 AM
>
>Per the list welcome messages, you should post the complete output of
>"postconf -n". This will aid members in solving your issue, if the cause
of
>your problem is indeed related to your Postfix configuration.
>
>--
>Stan
Postconf -n output:
alia
>
>Ioannis Tsouvalas:
>> 451 Requested action aborted: local error in processing
>
>This is not a Postfix error mesage. It is an error in a non-Postfix MTA.
>Please do not shoot the messenger.
>
>> 451 Temporary local problem - please try later
>
>This is n
>Ioannis Tsouvalas:
>> >
>> >Ioannis Tsouvalas:
>> >> 451 Requested action aborted: local error in processing
>> >> 451 Temporary local problem - please try later
>
>These you can do nothing about, except perhaps retry when the remote
>sys
Postconf -n output:
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
append_dot_mydomain = no
biff = no
config_directory = /etc/postfix
delay_warning_time = 4h
disable_vrfy_command = yes
inet_interfaces = all
local_recipient_maps =
mailbox_size_limit = 0
masquerade
>From: Stan Hoeppner (stanhardwarefreak.com)
>Date: Fri May 28 2010 - 18:09:48 CDT
>
>IIRC from his initial post, Ioannis has 3 virtual machines atop ESXi: one a
>dedicated Ubuntu Shorewall instance, one running Ubuntu Shorewall (again)
and
>Postfix, one running Microsoft SBS plus Exchange.
>
>A ba
I have disabled shorewall on Postfix machine using #shorewall clear , but
I'm still working on clearing shorewall on the dedicated machine, but I
haven't managed to make it happen since all the NAT has been implemented on
the shorewall configuration. I'm still trying to figure out a safe way to
mov
Stan, thanks again for your input, I am getting the idea and I'm working
towards that direction, still from 3 months testing this implementation has
moved to production, and I am working remotely, so "being careful" is one
way to describe my actions.
Ps. The net diagram looked much better when I
In the original scenario, Exchange was in the same network with Postfix
(both in dmz). For a reason, when applied on the customer premises, dhcp
wouldn't go through for the local workstations, so exchange was moved to the
local zone. To be honest, the testing didn't include large attachments (if
an
>Ioannis, disable all the firewalls but for basic SPI NAT/PAT (if you're
using
>NAT) on the dedicated Shorewall guest. Route TCP 25 inbound via a PAT rule
to
>the Postfix guest. See if that eliminates the timeout and related TCP
errors.
>--
>Stan
Dear Stan, I was just about to get enthusiasti
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