One exception is the initial query - DNS implementations assume queries from
a random population, and don't search the active request list to see if a
request can be piggybacked on an outstanding request. So each IP4R test
from a new IP generates a separate request directly to the RBL.
Also,
PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf Of R. Scott Perry
Sent: 19 December 2002 23:49
To: [EMAIL PROTECTED]
Subject: RE: [Declude.JunkMail] relays.osiriusoft.com
>Declude does a seperate DNS lookup "for each IP4r test for each email"
>it is set to check. So if you do 12 dif
Declude does a seperate DNS lookup "for each IP4r test for each email" it is
set to check. So if you do 12 different ip4r type tests, 12 DNS queries are
done for each email. Declude either uses the DNS server you hand code in
global.cfg, or it uses the one defined in Imail's SMTP tab.
Correct
>relays.osiriusoft.com is not a regular DNS query. They are scanned for each
>email to see whether the source email exists in the DNS.
(Scott/Len/Sanford - bail me out here if I'm not understanding this right)
:-)
Declude does a seperate DNS lookup "for each IP4r test for each email" it is
set t
ay, December 19, 2002 11:01 AM
> To: [EMAIL PROTECTED]
> Subject: RE: [Declude.JunkMail] relays.osiriusoft.com
>
>
> > My only option to minimize hits on an external server will be direct
> >resolution which slows down some other sites, or being able to become a
> >sec
ubject: RE: [Declude.JunkMail] relays.osiriusoft.com
> My only option to minimize hits on an external server will be direct
>resolution which slows down some other sites, or being able to become a
>secondary for relays.osirusoft.com.
Your own server should NOT be noticably slower unless i
> My only option to minimize hits on an external server will be direct
>resolution which slows down some other sites, or being able to become a
>secondary for relays.osirusoft.com.
Your own server should NOT be noticably slower unless it is not configured
correctly. Without a forwarder to use,
Bind 8 at least, does not group requests for the same host name
resolution. I
don't know about V9 (which doesn't run reliably on Win32).
We are planning on adding some type of caching within Declude JunkMail, to
minimize problems with excessive DNS queries.
-Scott
Bind 8 at least, does not group requests for the same host name resolution. I
don't know about V9 (which doesn't run reliably on Win32).
My only option to minimize hits on an external server will be direct
resolution which slows down some other sites, or being able to become a
secondary
If I have 5 tests using relays.osirusoft.com, does it send 5 queries
per E-
mail?
That is correct.
However, if your DNS server operates efficiently, it *should* only send out
1 query.
-Scott
---
[This E-mail was scanned for viruses by Declude Virus (http://www.d
I prefer the forwarder configuration since infrequently used domain names
resolve much faster from a large cache.
If I have 5 tests using relays.osirusoft.com, does it send 5 queries per E-
mail?This seems to be the thing that triggered the block. Even if we go
directly to relays.osirus
FYI - Sprint has blocked our DNS server; we were using their server in a
forwarder configuration ; reason "too many lookups to relays.osirusoft.com
."
Has anyone set this up with Bind's IXFR as a secondary for the entire
zone?
If you are going to set up a DNS server, you don't have to worr
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