Sam Varshavchik wrote:
> Alexander Hotmail writes:
>> In all the materials I have read about Courier, I have not seen anything
>> said about DNS and MX records. Do I really need to use DNS and MX 
>> records?
> 
> If you want to receive mail on your IP address, you need a domain and an 
> MX record specifying your IP address.

In addition, DNS lookup is critical enough on a mail server that 
postmasters are usually better off running at least a cache DNS server 
on the same or a nearby machine.

Alexander Hotmail wrote:
> I have tried FETCHMAIL, but I am not too happy with it. Do you have any
> suggestions? I will deeply appreciate it.

AFAICR, it is very flexible and works more reliably than, say, 
msPOP3connector. Ask on the fetchmail-users mailing list for specific 
details.

At any rate, you'll have to configure addresses translation, e.g. mail 
retrieved from a account OLD will be sent to account NEW at a local 
domain. Use testmxlookup to verify the domain. Note that OLD and NEW 
cannot be at the same domain, otherwise mail to NEW will be routed to 
your ISP's server by the same logic that brought it there the first 
time. That logic is described in section "5.1. Locating the Target 
Host" of SMTP http://tools.ietf.org/html/rfc5321#section-5.1



















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