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From my home isp I can't access the daum email correctly.
I checked the DNS of imap/smtp via follows.
$ dig smtp.daum.net
; <<>> DiG 9.10.6 <<>> smtp.daum.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8473
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;smtp.daum.net. IN A
;; ANSWER SECTION:
smtp.daum.net. 123 IN A 157.240.8.41
;; Query time: 19 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Wed Jul 24 09:09:28 CST 2024
;; MSG SIZE rcvd: 47
$ dig imap.daum.net
; <<>> DiG 9.10.6 <<>> imap.daum.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8834
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;imap.daum.net. IN A
;; ANSWER SECTION:
imap.daum.net. 85 IN A 108.160.163.106
;; Query time: 13 msec
;; SERVER: 208.67.222.222#53(208.67.222.222)
;; WHEN: Wed Jul 24 09:09:47 CST 2024
;; MSG SIZE rcvd: 47
I am certain that these two IPs are not the official IPs of daum.net.
May I ask if this situation is due to DNS pollution? The public DNS
parser I am using is 208.67.222.222, which is a service provided by
Cisco.
Do you know how to stop this happens?
Thanks
--
regards,
Jeff Pang
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