I have a VPS server that I would like to get an SSL certificate for, and the CA needs an email address to verify that I own the domain. The options are:
firstname.lastname@example.org, and an address to
The server runs CentOS 5, and all I have set up for email is
sendmail. I don't have POP3 or IMAP. According to this Wikipedia article on Postmaster, it says that all SMTP servers support postmaster and it cites RFC 5321. Does
sendmail conform to this? I tried sending a test mail to
email@example.com, but I don't know how to receive it on my server. Do I need to open up any ports?
I haven't gotten a message back saying that my test mail failed to send, so my server must have gotten it.