Server Stopped Acceping Mail for outbound delivery

[danallen1]

12 hours ago, mail was working perfectly. Our web app could send all the mail we need it to send, it was delivered nearly instantaneously to its destination. We had just finished installing dkim and spf. Now, mail sent out through round mail is doing perfectly, but mail send from our webapp is not accepted by our own mail server. This server is dedicated to this one app, no other customers.

Here is the setup and the log





Sending roundmail works perfect
Nov 10 04:31:36 www postfix/smtpd[9219]: connect from localhost[127.0.0.1]
Nov 10 04:31:36 www postfix/smtpd[9219]: 71442C12B8: client=localhost[127.0.0.1], sasl_method=DIGEST-MD5, sasl_username=dan@hollyswritingclasses.com
Nov 10 04:31:36 www postfix/cleanup[9223]: 71442C12B8: message-id=<c1b83fe07012a87cee8080e8d669f4a2@hollyswritingclasses.com>
Nov 10 04:31:36 www opendkim[1608]: 71442C12B8: DKIM-Signature field added (s=mail, d=hollyswritingclasses.com)
Nov 10 04:31:36 www /usr/lib/plesk-9.0/psa-pc-remote[1624]: handlers_stderr: SKIP
Nov 10 04:31:36 www /usr/lib/plesk-9.0/psa-pc-remote[1624]: SKIP during call 'check-quota' handler
Nov 10 04:31:36 www dk_sign[9277]: Auth_ID: [hollyswritingclasses.com] Signed: [Yes] Header List: [Yes]
Nov 10 04:31:36 www /usr/lib/plesk-9.0/psa-pc-remote[1624]: handlers_stderr: PASS
Nov 10 04:31:36 www /usr/lib/plesk-9.0/psa-pc-remote[1624]: PASS during call 'dd51-domainkeys' handler
Nov 10 04:31:36 www postfix/qmgr[1753]: 71442C12B8: from=<dan@hollyswritingclasses.com>, size=651, nrcpt=1 (queue active)
Nov 10 04:31:36 www dovecot: imap-login: Login: user=<dan@hollyswritingclasses.com>, method=DIGEST-MD5, rip=127.0.0.1, lip=127.0.0.1, mpid=9279, secured, session=<YeVQYCwk7QB/AAAB>
Nov 10 04:31:36 www postfix/smtp[9228]: connect to plesk.com[199.115.105.6]:25: Connection refused
Nov 10 04:31:36 www postfix/smtp[9228]: connect to plesk.com[2620:e6::105:6]:25: Network is unreachable
Nov 10 04:31:36 www postfix/smtp[9228]: 71442C12B8: to=<message@plesk.com>, relay=none, delay=0.21, delays=0.15/0/0.05/0, dsn=4.4.1, status=deferred (connect to plesk.com[2620:e6::105:6]:25: Network is unreachable)
Nov 10 04:31:36 www postfix/smtpd[9219]: disconnect from localhost[127.0.0.1]
Nov 10 04:31:36 www dovecot: service=imap, user=dan@hollyswritingclasses.com, ip=[127.0.0.1]. Disconnected: Logged out rcvd=532, sent=580
Nov 10 04:31:37 www dovecot: imap-login: Login: user=<dan@hollyswritingclasses.com>, method=DIGEST-MD5, rip=127.0.0.1, lip=127.0.0.1, mpid=9281, secured, session=<y59bYCwk7wB/AAAB>
Nov 10 04:31:37 www dovecot: service=imap, user=dan@hollyswritingclasses.com, ip=[127.0.0.1]. Disconnected: Logged out rcvd=70, sent=606
Nov 10 04:31:38 www dovecot: imap-login: Login: user=<dan@hollyswritingclasses.com>, method=DIGEST-MD5, rip=127.0.0.1, lip=127.0.0.1, mpid=9284, secured, session=<qQpnYCwk/gB/AAAB>
Nov 10 04:31:38 www dovecot: imap-login: Login: user=<dan@hollyswritingclasses.com>, method=DIGEST-MD5, rip=127.0.0.1, lip=127.0.0.1, mpid=9285, secured, session=<lTVnYCwk/wB/AAAB>
Nov 10 04:31:38 www dovecot: service=imap, user=dan@hollyswritingclasses.com, ip=[127.0.0.1]. Disconnected: Logged out rcvd=131, sent=729
Nov 10 04:31:38 www dovecot: service=imap, user=dan@hollyswritingclasses.com, ip=[127.0.0.1]. Disconnected: Logged out rcvd=331, sent=1347




Now, I have log entries and I was present when this web app's mail worked just as well



now it bombs and throws these erriors:
Nov 10 04:34:36 www postfix/smtpd[9340]: warning: hostname www.hollyswritingclasses.com does not resolve to address 192.96.159.143
Nov 10 04:34:36 www postfix/smtpd[9340]: connect from unknown[192.96.159.143]
Nov 10 04:34:36 www postfix/smtpd[9340]: SSL_accept error from unknown[192.96.159.143]: 0
Nov 10 04:34:36 www postfix/smtpd[9340]: warning: TLS library problem: error:14094418:SSL routines:SSL3_READ_BYTES:tlsv1 alert unknown ca:s3_pkt.c:1262:SSL alert number 48:
Nov 10 04:34:36 www postfix/smtpd[9340]: lost connection after STARTTLS from unknown[192.96.159.143]
Nov 10 04:34:36 www postfix/smtpd[9340]: disconnect from unknown[192.96.159.143]


I really hope we can get this fixed.