>I've noticed a larger number of files in the queue than usual. Many are are
>being retried a number of times. A look in the log showed a couple of error
>messages popping up quite often:
>
>1. 451 <[EMAIL PROTECTED]>...Sender domain must resolve
>2. 451 4.1.8 <[EMAIL PROTECTED]>...Domain of sender address
>[EMAIL PROTECTED] does not resolve
>3. 450 4.4.3 For input: <[EMAIL PROTECTED]>... policy analysis
>reports DNS error with your source domain.
>
>We've recently moved the Imail server behind a NAT, and have had some
>trouble with DNS
yep, the receiving MTA�s can�t find your @senderdomain in DNS.
Add A and MX records to DNS for all your mail domains.
missing an MX record below:
# dig mail.caut.ca
; <<>> DiG 8.3 <<>> mail.caut.ca
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1
;; QUERY SECTION:
;; mail.caut.ca, type = A, class = IN
;; ANSWER SECTION:
mail.caut.ca. 1D IN A 204.92.1.143
;; AUTHORITY SECTION:
caut.ca. 1D IN NS communicator.caut.ca.
;; ADDITIONAL SECTION:
communicator.caut.ca. 1D IN A 204.92.1.144
;; Total query time: 3511 msec
;; FROM: as1.meiway.com to SERVER: default -- 212.73.210.81
;; WHEN: Thu May 17 22:14:48 2001
;; MSG SIZE sent: 30 rcvd: 96
# dig mail.caut.ca mx
; <<>> DiG 8.3 <<>> mail.caut.ca mx
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;; mail.caut.ca, type = MX, class = IN
missing an A record here:
# dig caut.ca
; <<>> DiG 8.3 <<>> caut.ca
;; res options: init recurs defnam dnsrch
;; got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUERY SECTION:
;; caut.ca, type = A, class = IN
Len
http://MenAndMice.com/DNS-training
http://BIND8NT.MEIway.com : ISC BIND 8.2.3 "NT3" for NT4 & W2K
http://IMGate.MEIway.com : Build free, hi-perf, anti-abuse mail gateways
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