Hi Wietse,

>> I have some confusion about multiple reverse PTR records per IP.
> 
> You need only one.
> 
> The name (from the address->name) lookup must resolve to the address.

I am still confused. 

Like my example below, what happens if I want to setup a single mail server 
that hosts mail for 20 different domains? I am told that 18 of those domains 
will be blacklisted and SMTP will fail because the lookup wont grab the right 
record.....

-Jason







>       Wietse
> 
>> Comcast has told me that they can only assign 2 reverse PTR records per IP.
>> 
>> So if I have mail.domainA.com and mail.domainB.com this is fine. If the re
>> -verse lookup is done and it is not correct, it will retry and get the second
>> - record and all is well.
>> 
>> How do people then run a large mail server with many domains? I have about
>> - 10 domains that need e-mail and I wanted to build a single mail server to h
>> -andle this. But now I guess it can't be done?
>> 
>> What is my best way to accomplish this? I dont want a lot of machines clut
>> -tering up my apartment and consuming massive electricity until my startup is
>> - off the ground..
>> 
>> Best,
>> -Jason
>> 
> 

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