ok one thing i can point out for sure
bcs.hants.sch.uk.mail.protection.outlook.com
is invalid
outlook.protection.com uses dashes where the dots are??
examples :
## dig mx eks.ca
; <<>> DiG 9.14.3 <<>> mx eks.ca
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55154
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 8d469e0eeac6bfb6a98f3271635fe35671a91eff83ee0116 (good)
;; QUESTION SECTION:
;eks.ca. IN MX
;; ANSWER SECTION:
eks.ca. 3600 IN MX 1
eks-ca.mail.protection.outlook.com.
;; Query time: 3 msec
;; SERVER: 10.220.0.2#53(10.220.0.2)
;; WHEN: Mon Oct 31 11:01:42 EDT 2022
;; MSG SIZE rcvd: 113
which you do seem to have configured properly.
which indicates an outlook365 office instance ?
[11:03:27] peer1.scom.ca [paul:0] /home/paul
## dig mx bcs.hants.sch.uk
; <<>> DiG 9.14.3 <<>> mx bcs.hants.sch.uk
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28562
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 44778fa8221a5c2ce19a65d5635fe3c3795288a54282cfaf (good)
;; QUESTION SECTION:
;bcs.hants.sch.uk. IN MX
;; ANSWER SECTION:
bcs.hants.sch.uk. 3600 IN MX 10
bcs-hants-sch-uk.mail.protection.outlook.com.
;; Query time: 150 msec
;; SERVER: 10.220.0.2#53(10.220.0.2)
;; WHEN: Mon Oct 31 11:03:31 EDT 2022
;; MSG SIZE rcvd: 133
only other issue which is more likely is that your dns server that you
have in use is not returning a value for the mx record (mine is)
maybe try dns servers 8.8.8.8 & 8.8.4.4 to test on that
which also look ok?
## dig @8.8.8.8 mx bcs.hants.sch.uk
; <<>> DiG 9.14.3 <<>> @8.8.8.8 mx bcs.hants.sch.uk
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42780
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;bcs.hants.sch.uk. IN MX
;; ANSWER SECTION:
bcs.hants.sch.uk. 3600 IN MX 10
bcs-hants-sch-uk.mail.protection.outlook.com.
;; Query time: 5 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Mon Oct 31 11:07:30 EDT 2022
;; MSG SIZE rcvd: 105
Happy Monday !!!
Thanks - paul
Paul Kudla
Scom.ca Internet Services <http://www.scom.ca>
004-1009 Byron Street South
Whitby, Ontario - Canada
L1N 4S3
Toronto 416.642.7266
Main 1.866.411.7266
Fax 1.888.892.7266
Email p...@scom.ca
On 10/31/2022 10:51 AM, Linkcheck wrote:
I'm trying to convince myself this is not my fault but I've been getting
several rejections over the past few months. My mail server has been
unmodified for a few years so I THINK it's not that, but sending mail to
(for example) bcs.hants.sch.uk results in:
(Host or domain name not found. Name service error for
name=bcs.hants.sch.uk type=MX: Host not found, try again)
The MX for the URI is:
bcs.hants.sch.uk.mail.protection.outlook.com
I use Unbound but it's set to resolve via cloudflare, opendns and
opennic. Could this, after several years, now be causing this problem?
--
dstiles
