Re: [Exim] [Spoofed Mail addresses spamming mails]

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Szerző: Vibhav
Dátum:  
Címzett: Andreas Metzler
CC: exim-users
Tárgy: Re: [Exim] [Spoofed Mail addresses spamming mails]
But how to block mails coming to genuine users...

My Friend who is also an admin , polled to 25 port of my server
and he did the following:

MAIL FROM:<invalidemailaccount@???>

RCTP TO: <validuser@???>

and he was able to deliver the mail to my mail box...

i want this scenario to be stopped


Andreas Metzler wrote:

>On Tue, Feb 03, 2004 at 02:41:00PM +0530, Vibhav wrote:
>
>
>>I have a problem in my exim server, spammers are telnetting to my server
>>using port 25 and making local delivery to unexisting email accounts,
>>which in turn my exim server returns a error message to the sender and
>>most of those mails are bounced and comes back to my postmaster account.
>>
>>
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>>I have smtp auth and open relays closed, as this is a local delivery
>>mail issue, how to curb this?
>>
>>
>
>Don't accept the mail and generate a bounce.
>
>See the ACLs in exim's default configuration, they use verify=recipient.
>              cu andreas

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