LinuxQuestions.org - getting mailx to use other machine's postfix server, not trusting my self-signed cert

title says it. i have a self-signed cert that i am using for tls on a postfix server, and i want to have other linux machines be able to mail script output via mailx and using this one postfix machine.

it's giving me this:

Code:

host certificate does not match "172.16.16.3"

smtp-server: 503 5.5.1 Error: authentication not enabled

where 172.16.16.3 is the mail server, even though i enabled tls in /etc/mail.rc:

Code:

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set smtp=172.16.16.3:25

set smtp-use-starttls

set ssl-verify=warn

set ssl-auth=login

set ssl-ca-file=/usr/share/ca-certificates/cacert.pem

set ssl-key=/usr/share/ca-certificates/key.pem

set smtp-auth-user=<<EMAIL>>

set smtp-auth-password="<<PASS>>"

where cacert.pem is my self-signed CA and key.pem is the cert key.

logs from the mail server show this:

Code:

Jun 19 17:02:48 pLAN9-Server2 postfix/smtpd[13666]: connect from pLAN9-Server1.pLAN9.site[172.16.16.2]

Jun 19 17:02:48 pLAN9-Server2 postfix/smtpd[13666]: lost connection after AUTH from pLAN9-Server1.pLAN9.site[172.16.16.2]

Jun 19 17:02:48 pLAN9-Server2 postfix/smtpd[13666]: disconnect from pLAN9-Server1.pLAN9.site[172.16.16.2]

so it looks like the problem is that the client is not trusting the cert, apparently because "host certificate does not match 172.16.16.3". What does that mean, and is there a way for mailx to ignore it and carry on?

thanks.