Re: [exim] mail gateway requirements

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Author: Jasen Betts
Date:  
To: exim-users
Subject: Re: [exim] mail gateway requirements
On 2015-07-03, Sujit Acharyya-choudhury <s.choudhury@???> wrote:
> --===============2004088050==
> Content-Language: en-US
> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature";
>     micalg=SHA1; boundary="----=_NextPart_000_0047_01D0B5B6.AE76A1F0"

>
> ------=_NextPart_000_0047_01D0B5B6.AE76A1F0
> Content-Type: text/plain;
>     charset="utf-8"
> Content-Transfer-Encoding: quoted-printable

>
> Just ping can cause DOS attack by Ping flooding. So if not needed for =
> mail gateway, we can disable ping on our mail gateways.=20
>


most internet systems have been hardened against participating in a
smurf attack. anyone wanting to DOS you would get better mileage from
attacking port TCP 25, perhaps with a crafted PTR and A record.


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umop apisdn