Question Problem with mail form

[CoyoteKG]

Hello,
on our site we have one form like this

    $mail = new PHPMailer;
    $mail->isSMTP();
    $mail->Host = "ex4.info";
// $mail->SMTPSecure = "ssl";
    $mail->Port = "25";
    $mail->SMTPAuth = true;
    $mail->Username = "[email protected]";
    $mail->Password = "465464846546adasdasd";
    $mail->setFrom('[email protected]', '"Kringers Formmailer" <[email protected]>');
    $mail->addReplyTo('[email protected]');
    $mail->addAddress('[email protected]');
    $mail->Subject = 'WEBSITE KONTAKT';
    $mail->msgHTML($strMailtext);

But form not working. We can't receive mails.
I check logs, and this is from maillog

Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: connect from africka-sljiva.ex4.info[213.239.193.5]
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: connect to Milter service unix:/spamass/spamass.sock: No such file or directory
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: connect to Milter service inet:127.0.0.1:12768: Connection refused
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: SSL_accept error from africka-sljiva.ex4.info[213.239.193.5]: 0
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: TLS library problem: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c:1294:SSL alert number 48:
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: lost connection after STARTTLS from africka-sljiva.ex4.info[213.239.193.5]
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: disconnect from africka-sljiva.ex4.info[213.239.193.5]

and this form mailwarn

Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: connect to Milter service unix:/spamass/spamass.sock: No such file or directory
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: connect to Milter service inet:127.0.0.1:12768: Connection refused
Jan 25 10:26:54 africka-sljiva postfix/smtpd[13166]: warning: TLS library problem: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c:1294:SSL alert number 48:

Can you help me how to resolve this?
Why those TLS errors, when in that php form we chose port 25 and no SSL?

 

[IgorG]

warning: connect to Milter service inet:127.0.0.1:12768: Connection refused

Make sure, at least, that pc-remote server is up and running:

# service pc-remote status
psa-pc-remote (pid 5090) is running...

 

[CoyoteKG]

I got this

root@africka-sljiva ~ # service pc-remote status
● pc-remote.service - Plesk mail filter service for Postfix
   Loaded: loaded (/lib/systemd/system/pc-remote.service; enabled)
   Active: failed (Result: signal) since Tue 2017-01-24 07:48:46 CET; 1 day 3h ago
 Main PID: 32067 (code=killed, signal=SEGV)

Jan 24 06:27:22 africka-sljiva.ex4.info systemd[1]: Started Plesk mail filter service for Postfix.
Jan 24 07:27:13 africka-sljiva.ex4.info /usr/lib/plesk-9.0/psa-pc-remote[32067]: Message aborted.
Jan 24 07:27:13 africka-sljiva.ex4.info /usr/lib/plesk-9.0/psa-pc-remote[32067]: Message aborted.
Jan 24 07:32:29 africka-sljiva.ex4.info /usr/lib/plesk-9.0/psa-pc-remote[32067]: Message aborted.
Jan 24 07:32:29 africka-sljiva.ex4.info /usr/lib/plesk-9.0/psa-pc-remote[32067]: Message aborted.
Jan 24 07:48:46 africka-sljiva.ex4.info systemd[1]: pc-remote.service: main process exited, code=killed, status=11/SEGV
Jan 24 07:48:46 africka-sljiva.ex4.info systemd[1]: Unit pc-remote.service entered failed state.

For now I added some old php script with no SMTP auth and now contact form working.
But I have no idea if it is good to have that kind of mail sending... kontakt form and that script are on the same server like mailserver

 

[IgorG]

Try to start it.

 

[CoyoteKG]

I started it already, and there is no error in mailwarn about pc-remote, now just this

Jan 25 11:08:06 africka-sljiva postfix/smtpd[17854]: warning: connect to Milter service unix:/spamass/spamass.sock: No such file or directory
Jan 25 11:08:06 africka-sljiva postfix/smtpd[17854]: warning: TLS library problem: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c:1294:SSL alert number 48:

and in maillog this

Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: connect from africka-sljiva.ex4.info[213.239.193.5]
Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: warning: connect to Milter service unix:/spamass/spamass.sock: No such file or directory
Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: SSL_accept error from africka-sljiva.ex4.info[213.239.193.5]: 0
Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: warning: TLS library problem: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c:1294:SSL alert number 48:
Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: lost connection after STARTTLS from africka-sljiva.ex4.info[213.239.193.5]
Jan 25 11:07:34 africka-sljiva postfix/smtpd[17854]: disconnect from africka-sljiva.ex4.info[213.239.193.5]

 

[IgorG]

SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c

Try to apply this solution - https://support.plesk.com/hc/en-us/articles/213387009