- Edited
I can send and recieve emails within my email server e.g. test1@mydomain and test2@mydomain but not externally e.g. to myemail@gmail.com
My setup sontains a server connecting to the router and has nginx that forwards requests to the mail-server machine. The router has only 80 and 443 ports oppened.
When I check the dns, everything seems ok except the first line:
I also checked using https://www.mail-tester.com
It says: Your DKIM signature is not valid