[Dshield] Need some help please

Tony Earnshaw tonye at billy.demon.nl
Sat Mar 5 10:33:19 GMT 2005


Aaron Lewis:

> The 2 different OS's was referring to workstations. Windows 2000 Pro and
> XP
> Pro. Is there a reason that a new version of QMail would have a low MTU
> and would cause this? Nothing on either end has been tweaked at all.

MTU has to do with your network interface, not Qmail. You can configure
it, example on Linux: "ifconfig eth0 mtu 750". I can't change the default
(1500?) on my XP box.

--Tonni

--

http://alive.znep.com/~marcs/mtu/

--Tonni

> -----Original Message-----
> From: list-bounces at lists.dshield.org
> [mailto:list-bounces at lists.dshield.org]On Behalf Of Tony Earnshaw
> Sent: Thursday, March 03, 2005 12:14 PM
> To: General DShield Discussion List
> Subject: RE: [Dshield] Need some help please
>
>
>
>
> Aaron Lewis:
>
>
>> I did look at this. There causes as listed are
>>
>>
>>
>> . Incorrect account settings
>> . Misconfiguration of personal firewall software
>> . Antivirus software
>> . A bad modem
>> . Maximum Transmission Unit (MTU) size
>> . Outlook Express has been removed from the computer or the installation
>>
> is
>> damaged . Your user profile in Outlook is damaged . An e-mail item on
>> your POP3 server is damaged
>>
>>
>> All of which are ruled out by the fact that I can reproduce the error
>> at will on 3 different LAN's 2 different OS's some with and some without
>>  firewalls. And I can also reproduce the error with no virus software
>> installed. I've been testing this crap for 3 days straight.
>>
>> Server is QMail.
>>
>
> So what did you lower your Qmail server's MTU (on 2 different OSs) to?
>
>
> --Tonni
>
>
> --
> mail: tonye at billy.demon.nl
> http://www.billy.demon.nl
>
>
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-- 
mail: tonye at billy.demon.nl
http://www.billy.demon.nl




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