Sean Carolan wrote:
We have an issue with some customers who refuse to accept ICMP traffic
to their mail servers. It seems that they have put Mordac, preventer
of information services in charge of their firewall policy
(http://en.wikipedia.org/wiki/List_of_minor_characters_in_Dilbert#Mordac).
On Tue, October 14, 2008 09:31, Kai Schaetzl wrote:
Sean Carolan wrote on Tue, 14 Oct 2008 08:13:34 -0500:
My mail logs are showing that customers who specifically disallow ICMP
traffic have many Connection Reset entries in our logs:
Could somebody explain why ICMP might play a role in mail
On 2008-10-14 16:31, Kai Schaetzl wrote:
Sean Carolan wrote on Tue, 14 Oct 2008 08:13:34 -0500:
My mail logs are showing that customers who specifically disallow ICMP
traffic have many Connection Reset entries in our logs:
Could somebody explain why ICMP might play a role in mail delivery?
Ralph Angenendt wrote on Tue, 14 Oct 2008 17:24:08 +0200:
If you don't know the smallest MTU on the path to the mail server, you
might not be able to send packets over that path, especially if DF is
set.
But if it's not set? Shouldn't most devices have it not set?
Kai
--
Kai Schätzl,
Kai Schaetzl wrote:
Ralph Angenendt wrote on Tue, 14 Oct 2008 17:24:08 +0200:
If you don't know the smallest MTU on the path to the mail server, you
might not be able to send packets over that path, especially if DF is
set.
But if it's not set? Shouldn't most devices have it not set?
Kai Schaetzl wrote:
Sean Carolan wrote on Tue, 14 Oct 2008 08:13:34 -0500:
My mail logs are showing that customers who specifically disallow ICMP
traffic have many Connection Reset entries in our logs:
Could somebody explain why ICMP might play a role in mail delivery?
It doesn't really. If
On Tue, October 14, 2008 12:31, Kai Schaetzl wrote:
Ralph Angenendt wrote on Tue, 14 Oct 2008 17:24:08 +0200:
If you don't know the smallest MTU on the path to the mail server, you
might not be able to send packets over that path, especially if DF is
set.
But if it's not set? Shouldn't
Kai Schaetzl wrote:
Ralph Angenendt wrote on Tue, 14 Oct 2008 17:24:08 +0200:
If you don't know the smallest MTU on the path to the mail server, you
might not be able to send packets over that path, especially if DF is
set.
But if it's not set? Shouldn't most devices have it not set?
Sean Carolan wrote on Tue, 14 Oct 2008 08:13:34 -0500:
My mail logs are showing that customers who specifically disallow ICMP
traffic have many Connection Reset entries in our logs:
Could somebody explain why ICMP might play a role in mail delivery?
Kai
--
Kai Schätzl, Berlin, Germany
Get
Sean Carolan a écrit :
We have an issue with some customers who refuse to accept ICMP traffic
to their mail servers. It seems that they have put Mordac, preventer
of information services in charge of their firewall policy
Kai Schaetzl wrote:
Sean Carolan wrote on Tue, 14 Oct 2008 08:13:34 -0500:
My mail logs are showing that customers who specifically disallow ICMP
traffic have many Connection Reset entries in our logs:
Could somebody explain why ICMP might play a role in mail delivery?
If you don't know
Kai Schaetzl a écrit :
Ralph Angenendt wrote on Tue, 14 Oct 2008 17:24:08 +0200:
If you don't know the smallest MTU on the path to the mail server, you
might not be able to send packets over that path, especially if DF is
set.
But if it's not set? Shouldn't most devices have it not set?
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