Re: my smtp server is very slow to accept connections today

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Don Russell wrote:
hmmm, here's something interesting... I just tried "dig -x 192.168.1.20" twice: First one timed out, the second one failed (expected, as 192.168.1.20 is also a private address...)

[don@boris ~]$ dig -x 192.168.1.20

; <<>> DiG 9.3.2 <<>> -x 192.168.1.20
;; global options:  printcmd
;; connection timed out; no servers could be reached
[don@boris ~]$ dig -x 192.168.1.20

; <<>> DiG 9.3.2 <<>> -x 192.168.1.20
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 43804
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;20.1.168.192.in-addr.arpa.     IN      PTR

;; Query time: 1711 msec
;; SERVER: 66.75.164.89#53(66.75.164.89)
;; WHEN: Thu Apr  6 15:32:40 2006
;; MSG SIZE  rcvd: 43

Trying dig with the "+trace" option might be more revealing:

$ dig -x 192.168.1.20 +trace

Nothing much obvious here unfortunately. Can you check that your system's hostname is set correctly, and that /etc/hosts has the right name and address for your host and also localhost?

That file is incredibly boring. :-) Maybe too boring? Is it missing something?

[don@boris ~]$ cat < /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1       localhost.localdomain   boris   localhost
[don@boris ~]$

Doesn't appear to have anything vital mssing :-)

I'm beginning to think this is not a Fedora issue... but an ISP issue... so I'm SOL because they *allow*, but don't *support* "home LANs", or it's some sort of NAT/firewall issue in my router... I'll have to check that out too...

Is there a way I could (temporarily) configure fedora to use diffent DNS servers, so I'm not using the two my ISP is telling me to use?

That is, if I know the address of a different DNS server, I can put the in my dhcp SERVER on my router, do a "service network restart" on Fedora and pick up the new dns servers that way...

Do you know the address of a "public" dns I could borrow for a few minutes? :-)

No need. Install the caching-nameserver package and start the "named" service. You'll then have your own DNS server at 127.0.0.1.

Paul.


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