OT: RNDS or whatever it was yesterday

[Alex Neuman van der Hans]

shuttlebox wrote:
> On 1/24/06, *Steve Campbell* <campbell at cnpapers.com 
> <mailto:campbell at cnpapers.com>> wrote:
> 
>     What should I see in my maillogs when sendmail rejects an unresolvable
>     domain message? I don't see anything yet.
> 
>     What is the best way to block the "lost input channel" type
>     messages? (Is
>     there a way?)
> 
> 
> Here's an example:
> 
> Jan 24 15:39:10 viola sendmail[15806]: [ID 801593 mail.notice] 
> k0OEaoQZ015806: ruleset=check_mail, arg1=<4m244yof3h at neaccess.com 
> <mailto:4m244yof3h at neaccess.com>>, relay=wasamail.wasadata.com 
> <http://wasamail.wasadata.com> [193.15.177.100 <http://193.15.177.100>], 
> reject=451 4.1.8 Domain of sender address 4m244yof3h at neaccess.com 
> <mailto:4m244yof3h at neaccess.com> does not resolve
> 
> About the "lost input channel" - aren't those often from spammers? They 
> usually don't behave correctly and you can't do much about it on your end.
> 
> -- 
> /peter
> 

Unless there's a milter somewhere that somebody here on the list knows 
about that can trigger an iptables command to block port 25 from 
anywhere that does this, say, three times in one minute or some other 
configurable setting...

-- 

Alex Neuman van der Hans
N&K Technology Consultants
Tel. +507 214-9002 - http://nkpanama.com/