openssl s_client -starttls smtp -connect yoremtuz.com:25

openssl s_client -starttls smtp -connect yoremtuz.com:587

250 SMTPUTF8
ehlo yoremtuz.com
250-yoremtuz.com
250-PIPELINING
250-SIZE 10240000
250-VRFY
250-ETRN
250-AUTH PLAIN LOGIN
250-AUTH=PLAIN LOGIN
250-ENHANCEDSTATUSCODES
250-8BITMIME
250-DSN
250 SMTPUTF8
auth login
334 VXNlcm5hbWU6
MAIL FROM:cHJmdnJkbUB5b3JlbXR1ei5jb20=
535 5.7.8 Error: authentication failed: Invalid base64 data in continued response
MAIL FROM:cHJmdnJkbUB5b3JlbXR1ei5jb20=
250 2.1.0 Ok
RCPT TO:porfavordama@hotmail.com
RENEGOTIATING
depth=0 C = TR, ST = Some-State, L = Samsun, O = Internet Widgits Pty Ltd, CN = yoremtuz.com
verify error:num=18:self signed certificate
verify return:1
depth=0 C = TR, ST = Some-State, L = Samsun, O = Internet Widgits Pty Ltd, CN = yoremtuz.com
verify return:1
rcpt to:porfavordama@hotmail.com
554 5.7.1 <porfavordama@hotmail.com>: Recipient address rejected: Access denied
quit
221 2.0.0 Bye

alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
compatibility_level = 2
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = ipv4
mailbox_size_limit = 0
mydestination = $myhostname, yoremtuz.com, localhost.com, , localhost
myhostname = yoremtuz.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
readme_directory = no
recipient_delimiter = +
relayhost =

smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unknown_client_hostname
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_hostname, reject_invalid_hostname
smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain = yoremtuz.com
smtpd_sasl_path = private/auth
smtpd_sasl_security_options = noanonymous
smtpd_sasl_type = dovecot
smtpd_tls_cert_file = /etc/ssl/certs/server.crt
smtpd_tls_key_file = /etc/ssl/private/server.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes

# 2.2.22 (fe789d2): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.13 (7b14904)
# OS: Linux 4.4.0-112-generic x86_64 Ubuntu 16.04.3 LTS
auth_mechanisms = plain login
mail_location = maildir:~/Maildir
namespace inbox {
  inbox = yes
  location =
  mailbox Drafts {
    special_use = Drafts
  }
  mailbox Junk {
    special_use = Junk
  }
  mailbox Sent {
    special_use = Sent
  }
  mailbox "Sent Messages" {
    special_use = Sent
  }
  mailbox Trash {
    special_use = Trash
  }
  prefix =
}
passdb {
  driver = pam
}
protocols = " imap pop3"
service auth {
  unix_listener /var/spool/postfix/private/auth {
    group = postfix
    mode = 0660
    user = postfix
  }
}
ssl_cert = </etc/dovecot/certificate.pem
ssl_key = </etc/dovecot/private/server.pem
userdb {
  driver = passwd
}

Feb 17 16:03:07 yoremtuz postfix/submission/smtpd[2672]: connect from localhost[127.0.0.1]
Feb 17 16:03:07 yoremtuz postfix/submission/smtpd[2672]: Anonymous TLS connection established from localhost[127.0.0.1]: TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Feb 17 16:03:20 yoremtuz postfix/submission/smtpd[2672]: warning: localhost[127.0.0.1]: SASL login authentication failed: Invalid base64 data in continued response
Feb 17 16:03:36 yoremtuz postfix/submission/smtpd[2672]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <burakaymakci@gmail.com>: Recipient address rejected: Access denied; from=<cHJmdnJkbUB5b3JlbXR1ei5jb20=> to=<burakaymakci@gmail.com> proto=ESMTP helo=<yoremtuz.com>
Feb 17 16:03:38 yoremtuz postfix/submission/smtpd[2672]: disconnect from localhost[127.0.0.1] ehlo=2 starttls=1 auth=0/1 mail=1 rcpt=0/1 quit=1 commands=5/7