Cannot send / receive email through Squirrel mail-get error

i comment out the line:
# smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem
in main.cf
restarting postfix
the same result
mail.log

Code:

Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: warning: cannot get RSA certificate from file /etc/ssl/certs/smtpd.crt: disabling TLS support
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: warning: TLS library problem: 7334:error:02001002:system library:fopen:No such file or directory:bss_file.c:398:fopen('/etc/ssl/certs/smtpd.crt','r'):
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: warning: TLS library problem: 7334:error:20074002:BIO routines:FILE_CTRL:system lib:bss_file.c:400:
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: warning: TLS library problem: 7334:error:140DC002:SSL routines:SSL_CTX_use_certificate_chain_file:system lib:ssl_rsa.c:722:
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: connect from localhost[::1]
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: warning: table "mysql:/etc/postfix/mysql-virtual_client.cf": empty query string -- ignored
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: 109726579405: client=localhost[::1]
Aug 21 15:42:14 vps-6121 postfix/cleanup[7340]: 109726579405: message-id=<[email protected]>
Aug 21 15:42:14 vps-6121 postfix/qmgr[6965]: 109726579405: from=<support@MY_DOMAIN.com>, size=746, nrcpt=1 (queue active)
Aug 21 15:42:14 vps-6121 postfix/smtpd[7334]: disconnect from localhost[::1]
Aug 21 15:42:14 vps-6121 dovecot: imap-login: Login: user=<support@MY_DOMAIN.com>, method=PLAIN, rip=::1, lip=::1, mpid=7343, secured, session=</8LlmNEdSAAAAAAAAAAAAAAAAAAAAAAB>
Aug 21 15:42:14 vps-6121 postfix/error[7341]: 109726579405: to=<support@MY_DOMAIN.com>, relay=none, delay=0.07, delays=0.06/0.01/0/0.01, dsn=4.4.2, status=deferred (delivery temporarily suspended: lost connection with 127.0.0.1[127.0.0.1] while sending RCPT TO)
Aug 21 15:42:14 vps-6121 dovecot: imap(support@MY_DOMAIN.com): Disconnected: Logged out in=609 out=471
Aug 21 15:42:14 vps-6121 dovecot: imap-login: Login: user=<support@MY_DOMAIN.com>, method=PLAIN, rip=::1, lip=::1, mpid=7348, secured, session=<yv/smNEdTwAAAAAAAAAAAAAAAAAAAAAB>
Aug 21 15:42:14 vps-6121 dovecot: imap(support@MY_DOMAIN.com): Disconnected: Logged out in=117 out=1446
Aug 21 15:42:53 vps-6121 postfix/scache[7181]: statistics: start interval Aug 21 15:39:33
Aug 21 15:42:53 vps-6121 postfix/scache[7181]: statistics: domain lookup hits=0 miss=3 success=0%
Aug 21 15:42:53 vps-6121 postfix/scache[7181]: statistics: address lookup hits=0 miss=3 success=0%
Aug 21 15:43:21 vps-6121 postfix/anvil[7126]: statistics: max connection rate 1/60s for (smtp:209.85.218.52) at Aug 21 15:38:40
Aug 21 15:43:21 vps-6121 postfix/anvil[7126]: statistics: max connection count 1 for (smtp:209.85.218.52) at Aug 21 15:38:40
Aug 21 15:43:21 vps-6121 postfix/anvil[7126]: statistics: max cache size 1 at Aug 21 15:38:40
Aug 21 15:43:22 vps-6121 dovecot: auth-worker(7367): mysql(localhost): Connected to database dbispconfig
Aug 21 15:43:22 vps-6121 dovecot: imap-login: Login: user=<support@MY_DOMAIN.com>, method=PLAIN, rip=::1, lip=::1, mpid=7369, secured, session=<XaL0nNEdLwAAAAAAAAAAAAAAAAAAAAAB>
Aug 21 15:43:22 vps-6121 dovecot: imap(support@MY_DOMAIN.com): Disconnected: Logged out in=79 out=710
Aug 21 15:43:24 vps-6121 dovecot: imap-login: Login: user=<support@MY_DOMAIN.com>, method=PLAIN, rip=::1, lip=::1, mpid=7371, secured, session=<DDkSndEdQwAAAAAAAAAAAAAAAAAAAAAB>
Aug 21 15:43:24 vps-6121 dovecot: imap(support@MY_DOMAIN.com): Disconnected: Logged out in=117 out=1446

it's seems the same error

 

Hello,
Is there something i can do to solve the problem?
Thank you

 

after this commands -

something happen,
i recived all the previous mail that was sent and from the sender as " Mail Delivery Subsystem".

but when trying to send or recive nothing happen
my mail.log - https://docs.google.com/document/d/1g5oaReXwQ_s_XAX8FKP-Oju28T2ZF1yvww2DA7od0gw/edit?usp=sharing

 

https://docs.google.com/document/d/1gbm7tmE9a3o_GHQh9_6N5zt1fK0iQj0YZSoMudupSpg/edit?usp=sharing

Code:

 ifconfig
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1581015 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1581015 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:389146390 (371.1 MiB)  TX bytes:389146390 (371.1 MiB)

venet0    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:127.0.0.1  P-t-P:127.0.0.1  Bcast:0.0.0.0  Mask:255.255.255.255
          inet6 addr: ::2/128 Scope:Compat
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:2974216 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4026624 errors:0 dropped:76 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:164183538 (156.5 MiB)  TX bytes:5520793675 (5.1 GiB)

venet0:0  Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet addr:168.144.97.85  P-t-P:168.144.97.85  Bcast:168.144.97.85  Mask:255.255.255.255
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1