I have a mail server on
mail.domainA.com which is working absolutely fine if I send email to
name@domainA.com. I then configured a second domain (domainB.com) in bind9 (same server) to use
mail.domainA.com as the mailing server. However, when I send email to
someone@domainB.com I see no logs in POSTFIX, so its like their is no contact with the mail server.
Note: I am using Cloudflare. So even if I expose
mail.domainA.com my mailing server, still there is nothing in logs, somehow
domainB.com is not contacting
My bind9 configuration for DomainA:
; MX Record domainA.com. IN MX 10 mail.domainA.com. ; A record for nameserver @ IN A 18.104.22.168 mail IN A 22.214.171.124 domainA.com. IN TXT "v=spf1 a mx ip4:126.96.36.199 ~all" mail IN TXT "v=spf1 a mx ip4:188.8.131.52 ~all"
My bind9 configuration for DomainB:
; MX Record domainB.com. IN MX 10 mail.domainA.com. ; A record for nameserver @ IN A 184.108.40.206 mail IN A 220.127.116.11 mail IN TXT "v=spf1 mx a ip4:18.104.22.168 ~all" domainB.com. IN TXT "v=spf1 mx a ip4:22.214.171.124 ~all"
I also have the same setup on cloudflare.
My postfix (main.cf) config file:
myhostname = mail.domainA.com mydomain = domainA.com myorigin = domainA.com virtual_alias_domains = domainA.com domainB.com