Ssls
From Karmaking
Three certificates into one file, separated with blank lines!
cat karmaking.crt >> collected.pem
echo >> collected.pem
cat COMODORSADomainValidationSecureServerCA.crt >> collected.pem
echo >> collected.pem
cat COMODORSAAddTrustCA.crt >> collected.pem
Dovecot: Only collected.pem and .key files
Apache/Postfix:
SSLCertificateFile / smtpd_tls_cert_file karmaking.crt
SSLCertificateKeyFile / smtpd_tls_CAfile .key
SSLCertificateChainFile / collected.pem collected.pem