How many domains per email server?
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Topic: How many domains per email server?
Posted By: Bluefrog
Subject: How many domains per email server?
Date Posted: 17 November 2005 at 2:48am
If I've got it right, any email server that identifies itself as
"mail.domain.com" necessarily can only fully support 1 domain as it is
also required to accept email in the form user@[123.123.123.123].
That is unless user "user1" on domain1 and "user1" on domain2 and for all domains are necessarily the same user. i.e. All users must be unique across all domains that the email server services for. In which case, the email server can be valid for an unlimited number of domains.
Or, in other words, if you want "user1" on "domain1" to be different
from "user1" on "domain2", then the email server can only fully support
1 domain per IP address.
Right? 
I don't mean "will it send mail". I mean does it follow the RFC so that
the anti-spam nutcases don't put it on their black-lists.
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Replies:
Posted By: dpyers
Date Posted: 17 November 2005 at 8:10pm
I thought that rfc was withdrawn when ip's started getting scarce in the late 90's.
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Posted By: Bluefrog
Date Posted: 18 November 2005 at 12:20am
Hmmm... Maybe. Not too sure. I just remember reading it before.
So that "was" correct at one, point, but not anymore? Right?
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Posted By: Bluefrog
Date Posted: 20 November 2005 at 10:02am
AH... Now that the new server is online...
There are some anti-spam zealots out there that still use the
postmaster@[123.123.123.123] spec to remove you from their death lists.
They are also used by a large number of ISPs despite their complete
neglect for maintaining any kind of integrity in their black lists.
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Posted By: huwnet
Date Posted: 20 November 2005 at 11:07am
postmaster@ webmaster@ abuse@
are all used.
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Posted By: Bluefrog
Date Posted: 21 November 2005 at 1:21am
huwnet wrote:
postmaster@ webmaster@ abuse@
are all used.
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Right. But only postmaster@ is mandatory. abuse@ is recommended though.
Not sure about webmaster@ though - it is recommended or mandatory? Not
that I've read anyways.
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