OpenSSL CSR with SAN

openssl req -out sslcert.csr -newkey rsa:2048 -nodes -keyout private.key -config /opt/ssl.conf

vi /opt/ssl.conf

[ req ]
default_bits       = 2048
distinguished_name = req_distinguished_name
req_extensions     = req_ext
prompt             = no

[ req_distinguished_name ]
countryName          = AU
stateOrProvinceName  = Queensland
localityName         = Ipswich
organizationName     = Organization Name (eg, company)
commonName           = email.testforme.com

[ req_ext ]
subjectAltName = @alt_names

[alt_names]
DNS.1 = mail.testforme.com
DNS.2 = mail.klaverstyn.com
DNS.3 = mail.klaverstyn.com.au
DNS.4 = home.klaverstyn.com.au
DNS.5 = mail.homne.klaverstyn.com.au