Re: Spam spam spam spam spam

[Mark Milhollan <mlm@attglobal.net>]

Lars Magne Ingebrigtsen <larsi@gnus.org> writes:

>Anyway, I've now implemented DNS lookups natively.  (You need CVS
>Emacs.)  

I won't ask about EDNS0 or fall back to TCP (especially if the result via
UDP is truncated) or DNSSEC, since they are unlikely to be necessary for
DNSBL purposes (so far).

>People with Emacsen that doesn't have that will probably have
>to substitute with some external program, which will probably be
>somewhat slow...

The rblcheck program, if available, would be the nominal alternative ...

,----[ C-u M-! rblcheck -h RET ]
| rblcheck 1.5
| Copyright (C) 1997, 1998, 1999, 2000, 2001 Edward S. Marshall
| Usage: ./rblcheck [-qtlcvh?] [-s <service>] <address> [ <address> ... ]
| 
|     -q           Quiet mode; no output
|     -t           Print a TXT record, if any
|     -m           Stop checking after first address match in any list
|     -l           List default RBL services to check
|     -c           Clear the current list of RBL services
|     -s <service> Add a new service to the RBL services list
|     -h, -?       Display this help message
|     -v           Display version information
|     <address>    An IP address to look up; specify `-' to read multiple
|                  addresses from standard input.
`----

,----[ C-u M-! rblcheck -m -c -s relays.osirusoft.com 127.0.0.1 RET ]
| 127.0.0.1 not RBL filtered by relays.osirusoft.com
`----

,----[ C-u M-! rblcheck -m -c -s relays.osirusoft.com 127.0.0.2 RET ]
| 127.0.0.2 RBL filtered by relays.osirusoft.com
`----

Other alternative programs would be host, dig or nslookup, all of which
require address octet reversal ...

,----[ C-u M-! host -t any 1.0.0.127.relays.osirusoft.com RET ]
| 1.0.0.127.relays.osirusoft.com does not exist (Authoritative answer)
`----

,----[ C-u M-! host -t any 2.0.0.127.relays.osirusoft.com RET ]
| 2.0.0.127.relays.osirusoft.com	A	127.0.0.4
| 2.0.0.127.relays.osirusoft.com	A	127.0.0.2
| 2.0.0.127.relays.osirusoft.com	A	127.0.0.6
`----

,----[ C-u M-! dig 1.0.0.127.relays.osirusoft.com any +pfmin RET ]
| ;; res options: init recurs defnam dnsrch
| ;; got answer:
| ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 57324
| ;; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
| ;; QUERY SECTION:
| ;;	1.0.0.127.relays.osirusoft.com, type = ANY, class = IN
`----

,----[ C-u M-! dig 2.0.0.127.relays.osirusoft.com any +pfmin RET ]
| ;; res options: init recurs defnam dnsrch
| ;; got answer:
| ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37513
| ;; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
| ;; QUERY SECTION:
| ;;	2.0.0.127.relays.osirusoft.com, type = ANY, class = IN
| 
| ;; ANSWER SECTION:
| 2.0.0.127.relays.osirusoft.com.  11h37m50s IN A  127.0.0.4
| 2.0.0.127.relays.osirusoft.com.  11h37m50s IN A  127.0.0.2
| 2.0.0.127.relays.osirusoft.com.  11h37m50s IN A  127.0.0.6
`----

,----[ C-u M-! nslookup -q=any 1.0.0.127.relays.osirusoft.com RET ]
| *** localhost can't find 1.0.0.127.relays.osirusoft.com: Unspecified error
| Server:  localhost
| Address:  127.0.0.1
`----

,----[ C-u M-! nslookup -q=any 2.0.0.127.relays.osirusoft.com RET ]
| Server:  localhost
| Address:  127.0.0.1
| 
| Non-authoritative answer:
| 2.0.0.127.relays.osirusoft.com	internet address = 127.0.0.4
| 2.0.0.127.relays.osirusoft.com	internet address = 127.0.0.2
| 2.0.0.127.relays.osirusoft.com	internet address = 127.0.0.6
`----


/mark