Hello everybody, How are you? I have two servers using ISPConfig, on server A there are Email, DNS, Web and Database services and on server B only Web and Database services. Server A: 209,239.122,148 Server B: 126.96.36.199 One of the domains, although I point to the mail server (server A), the ip address is still server B. Some information. However, the mailbox remains on the other server. dig command @localhost joyber.com.br Code: [email protected]:~# dig @localhost joyber.com.br ; <<>> DiG 9.9.5-9+deb8u19-Debian <<>> @localhost joyber.com.br ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49462 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;joyber.com.br. IN A ;; ANSWER SECTION: joyber.com.br. 3600 IN A 188.8.131.52 ;; AUTHORITY SECTION: joyber.com.br. 3600 IN NS usve255032.serverprofi24.com. ;; ADDITIONAL SECTION: usve255032.serverprofi24.com. 59155 IN A 184.108.40.206 ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Tue Nov 09 10:46:55 UTC 2021 ;; MSG SIZE rcvd: 116 Thanks for any help and if you have any other information I can provide to help investigate the case, please let me know.