I'm unable to send an email to "a.n...@surfacetreatment.be", getting
"domain not found".
it seems to me they're misconfigured and, don't have MX set correctly?
or am i misinterpreting this, mxtoolbox find MX ?
fwiw, web surfacetreatment.be redirects to surfacetreatment.nl
thanks for help, explanation and any pointers
Mar 1 08:58:53 emu postfix/smtpd[22849]: NOQUEUE: reject: RCPT from
localhost[127.0.0.1]: 450 4.1.2 <a.n...@surfacetreatment.be>: Recipient
address rejected: Domain not found; from=<m...@sbt.net.au>
to=<a.n...@surfacetreatment.be> proto=ESMTP helo=<sbt.net.au>
# dig -t MX surfacetreatment.be
; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.47.rc1.el6_8.4 <<>> -t MX
surfacetreatment.be
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 25122
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;surfacetreatment.be. IN MX
;; Query time: 226 msec
;; SERVER: 45.65.12.7#53(45.65.12.7)
;; WHEN: Wed Mar 1 10:53:22 2017
;; MSG SIZE rcvd: 37
mxtoolbox says:
mx:surfacetreatment.be Find Problems mx
Pref Hostname IP Address TTL
10 remote.surfacetreatment.be 91.183.126.148 5 min Blacklist Check
SMTP Test
dns lookup dns check whois lookup spf lookup dns propagation
Reported by ns1.skynet.be on 2/28/2017 at 11:53:37 PM (UTC 0), just for
you. (History) Transcript
smtp:91.183.126.148 Monitor This smtp
220 remote.surfacetreatment.be Microsoft ESMTP MAIL Service ready at Tue,
28 Feb 2017 22:59:45 +0100
Test Result
SMTP Transaction Time 8.767 seconds - Not good! on Transaction Time
More
Info
SMTP Reverse DNS Mismatch OK - 91.183.126.148 resolves to
remote.surfacetreatment.be
SMTP Valid Hostname OK - Reverse DNS is a valid Hostname
SMTP Banner Check OK - Reverse DNS matches SMTP Banner
SMTP TLS OK - Supports TLS.
SMTP Connection Time 0.859 seconds - Good on Connection time
SMTP Open Relay OK - Not an open relay.
Session Transcript:
Connecting to 91.183.126.148
220 remote.surfacetreatment.be Microsoft ESMTP MAIL Service ready at Tue,
28 Feb 2017 22:59:45 +0100 [672 ms]
EHLO PWS3.mxtoolbox.com
250-remote.surfacetreatment.be Hello [192.168.0.1]
250-SIZE 30720000
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-AUTH
250-8BITMIME
250 BINARYMIME [953 ms]
MAIL FROM:<supert...@mxtoolbox.com>
250 2.1.0 Sender OK [734 ms]
RCPT TO:<t...@example.com>
550 5.7.1 Unable to relay [5735 ms]
PWS3v2 9986ms
