Thanks !
But let me ask again... :-)
I'm not providing access to my customer only some hosting service, so I
can't filter IP address.
The only way to close relay to the world is to force SMTP AUTH ?
If yes, exist some mailer that not support this feature ?
Thanks again.
Piero
Italy
----- Original Message -----
From: "Len Conrad" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, February 01, 2001 7:40 PM
Subject: Re: [IMail Forum] Mail from Orbs, please help!
>
> >I've received the following email from Orbs.
>
> Happy New Year!!
>
> >My english is not very good,
>
> so far, it's good enough
>
> > but I assume that my server 193.70.108.147
> >appear such as open relay.
> >I've setting Imail 6 since from many month with:
> >-Relay for local hosts only
>
> that's why
>
> >Can someone help me to understand what's problem ?
>
> all mail headers are forgeable. all ORBS or any spammer has to do to your
mail server is say in the SMTP envelope:
>
> MAIL FROM: [EMAIL PROTECTED]
>
> and relay through you millions of msgs.
>
> >Again, Orbs email means that my mailserver is banned out from who are
using
> >orbs to prevent spam ?
>
> yes, you are an open, easily highjackable relay.
>
> >How can I do to check if someone making spam using my server ?
>
> your spool\sysMMDD.txt file will be larger than your avg before the
spammer gotcha.
>
>
> The only setting is relay for addresses, force all users authenticate with
SMTP AUTH, and block ip spoofing at your border router.
>
> Len
>
>
> Please visit http://www.ipswitch.com/support/mailing-lists.html
> to be removed from this list.
>
> An Archive of this list is available at:
> http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
>
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
