Thanks for reply
First off, all was working fine until recently so doubt it something i have done, possible an update?
Yes i did do traceroute and dig
traceroute 188.125.72.74
traceroute to 188.125.72.74 (188.125.72.74), 30 hops max, 60 byte packets
1 static.78-47-66-225.clients.your-server.de (78.47.66.225) 0.313 ms 0.482 ms 0.635 ms
2 * core23.fsn1.hetzner.com (213.239.229.233) 1.537 ms core24.fsn1.hetzner.com (213.239.229.237) 7.426 ms
3 core1.fra.hetzner.com (213.239.203.153) 4.815 ms 4.952 ms core1.fra.hetzner.com (213.239.229.77) 5.035 ms
4 yahoo.peering.cz (91.213.211.120) 19.375 ms 18.834 ms 19.875 ms
5 UNKNOWN-188-125-89-X.yahoo.com (188.125.89.123) 20.335 ms 19.933 ms 19.466 ms
6 UNKNOWN-188-125-89-X.yahoo.com (188.125.89.53) 25.379 ms 27.604 ms 24.044 ms
7 xe-4-2-0.pat1.tc2.yahoo.com (66.196.65.210) 24.250 ms 25.258 ms 24.673 ms
8 UNKNOWN-66-196-65-X.yahoo.com (66.196.65.217) 40.263 ms 39.991 ms 41.017 ms
9 et-1-1-2.msr1.ir2.yahoo.com (66.196.65.19) 42.090 ms 41.365 ms ge-0-3-9-d104.pat1.the.yahoo.com (66.196.65.21) 41.103 ms
10 lo0.fab1-1-gdc.ir2.yahoo.com (77.238.190.2) 42.128 ms lo0.fab2-1-gdc.ir2.yahoo.com (77.238.190.3) 41.887 ms lo0.fab3-1-gdc.ir2.yahoo.com (77.238.190.4) 41.222 ms
11 usw1-1-lbb.ir2.yahoo.com (77.238.190.104) 42.195 ms usw2-1-lbb.ir2.yahoo.com (77.238.190.105) 41.109 ms usw1-1-lbb.ir2.yahoo.com (77.238.190.104) 41.381 ms
12 mtaproxy2.free.mail.vip.ir2.yahoo.com (188.125.72.74) 41.548 ms 40.999 ms 39.975 ms
dig 188.125.72.74
; <<>> DiG 9.11.5-P4-5.1+deb10u1-Debian <<>> 188.125.72.74
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 39042
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;188.125.72.74. IN A;; AUTHORITY SECTION:
. 1052 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2020072800 1800 900 604800 86400;; Query time: 0 msec
;; SERVER: 213.133.100.100#53(213.133.100.100)
;; WHEN: Tue Jul 28 11:34:16 BST 2020
;; MSG SIZE rcvd: 117
Note this is not just yahoo or gmail, but any other email that sending is tried too, including
How can my own firewill be blocking me when it is turned off?
I need to configure DMARC, all others should be fine.