[c-nsp] SMTP

[Marcus.Gerdon]

Hi Mohammed,

if your customers aren't assigned unique ip subnets (usually business/leased-line customers) which are/should be documented seperately in the appropriate radb but are originating from dynamic access like DSL's you're somewhat out of any other option.

Even static assignments, radb-entries and everything else will not protect you against 'blackmailing' by some lists (like sorbs blocking whole asn's).


regards,

Marcus 

> -----Ursprüngliche Nachricht-----
> Von: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] Im Auftrag von 
> Mohammad Khalil
> Gesendet: Montag, 15. März 2010 11:39
> An: cisco-nsp at puck.nether.net
> Betreff: [c-nsp] SMTP
> 
> 
> hi all
> 
> we have a lot of our customers that are uses SMTP servers 
> other than our own server
> which causes the subnet to be black listed 
> we tried to block them from accessing any other SMTP server 
> except our own server using access lists on our core routers 
> it works fine but is that the optimal solution for that??
> is there any other ways to do that ?
> 
> Thanks
>  		 	   		  
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