Re: [ossig] Streamyx IP got blacklisted from sending email!

[Michael Choo <mikechoo@xxxxxxxxxxx>]

Which ISP here in Malaysia or the region gives you reverse DNS to your 
IP block?

On Jan 31, 2004, at 3:17, Tze-Meng Tan wrote:

> On Jan 31, 2004, at 12:21 AM, Colin Charles wrote:
>
>> On Fri, 2004-01-30 at 21:43, Imran William Smith wrote:
>>> Maybe there's a market for a company to sell on SMTP
>>> services here in Malaysia (obviously using some kind of auth,
>>> like pop-before-relay).
>>
>> Won't work if the ISP itself blocks any outgoing port 25 traffic. They
>> effectively then force you to use their own SMTP servers. Most 
>> annoying.
>
> hmm, which ISP does this?
>
> Anyway, best way around being black holed along with your ISP if you 
> have your own servers is to ensure two things:
>
> reverse DNS lookups on your server IP shows a domain different than 
> that of your ISP....premise, its your own domain, so you should be 
> able to control things better and not get black-holed
>
> get your allocated IP block registered with APNIC in-addr.arpa by the 
> creation of an INETNUM database object...this makes sure when someone 
> does a whois on your IP number they get your domain and not your ISPs
>
> If the black-hole maintainers do their job right your block won't be 
> listed, otherwise you can email them and complain telling em to do a 
> whois and rev lookup
>
> However, there is a catch for both of these, your ISP will have to do 
> the work for both to work ...because the BIG block was allocated to 
> them, they own it so when they carve out a piece to allocate to a 
> customer they have to update their DNS server and APNIC's database 
> .... thats the tough part, unless you are on a leased line its not 
> going to happen
>
>
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>
cheers
-Mike


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