Postfix own certificate

[Bernd_Rabe]

I've configured postfix to use my own certificate.

/etc/postfix/main.cf
smtpd_tls_cert_file = /etc/postfix/myveryowncertificate.pem

the certifcate file includes the private key, myveryowncertificate, the intermediate certificate, and the root certificate.

I use the certificate also for my domain, so it is a certificate for www.sitename.de, so I got a warning with the email client about
the non matching domain name (don't know if this could be fixed without paying for a new certificate) but I also got
all the time an certificate identity warning with the plesk default certificate?!

So the certificate is issued for www.sitename.de
plesk's webspace host settings/prefered domain is set to www.domain.tld

I tried it under Mac OS Mavericks Apple Mail an Mozilla Thunderbird with the same result.

Any help is appreciated

 

[Lloyd_mcse]

You will need a certificate for sitename.de which (usually) covers it and www.sitename.de, which u can use for the Plesk Panel.
But then for mail you need a certificate for mail.sitename.de, don't forget to add the certificate to courier-imap config too.

 

[Bernd_Rabe]

Thanks but the mail servers address is the same as the website (so sitename.de) and I use postfix as mta.
For me it seems to be somehow strange that I still get warning for the default plesk certificate which I don't use at all.

Do you have an explanation for that?