imap.cnf

[req]
default_bits = 2048
prompt = no
default_md = sha256
distinguished_name = dn
req_extensions = req_ext

[dn]
C = DE
O = onemarcfifty
emailAddress = admin@example.com
CN = imap.example.com

[req_ext]
subjectAltName = @alt_names

[alt_names]
DNS.1 = imap.example.com
DNS.2 = imap
DNS.3 = smtp.example.com
DNS.4 = smtp
DNS.5 = mail.example.com
DNS.6 = mail