Question

Mail Server Can't Receive Email But Can Send Email - Postfix, Dovecot , debian 8

I have server where I want to set up a mail server to let me receive and send email from my domain. I’m currently having a problem where while I am authorized to send email from the server, but according to the logs, am not authorized to receive email from any provider other than my own network.

i can send email but i cant receive any email

My main.cf:

    # See /usr/share/postfix/main.cf.dist for a commented, more complete version


# Debian specific:  Specifying a file name will cause the first
# line of that file to be used as the name.  The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_mailbox_domains = $mydomain
virtual_alias_maps = hash:/etc/postfix/virtual_aliases

readme_directory = no

# TLS parameters
smtpd_tls_cert_file=/etc/ssl/certs/mailcert.pem
smtpd_tls_key_file=/etc/ssl/private/mail.key
smtpd_use_tls=yes
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_tls_security_level = may
smtp_tls_security_level = may


#smtpd_sasl_auth_only = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth



smtpd_recipient_restrictions =
        permit_sasl_authenticated,
        permit_mynetworks,
        reject_unauth_destination

# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.

smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = mail.pinsood.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = mail.pinsood.com, pinsood.com, localhost.localdomain, localhost
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_command = procmail -a "$EXTENSION"
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all

#mydomain = pinsood.com
#myhostname = mx.$mydomain
#myorigin = $mydomain
#mydestination = localhost



and logs



tail -f /var/log/mail.err /var/log/mail.log /var/log/dovecot.log
==> /var/log/mail.err <==
Aug 31 08:38:02 pinsood postfix/smtpd[24160]: fatal: no SASL authentication mechanisms
Aug 31 08:47:35 pinsood postfix/smtpd[24476]: fatal: no SASL authentication mechanisms
Aug 31 12:30:51 pinsood postfix/smtpd[31348]: fatal: no SASL authentication mechanisms
Aug 31 12:45:11 pinsood postfix/postfix-script[31792]: fatal: the Postfix mail system is already running
Aug 31 12:45:49 pinsood postfix/postfix-script[31816]: fatal: the Postfix mail system is already running
Aug 31 13:15:54 pinsood postfix[32682]: fatal: usage: postfix [-c config_dir] [-Dv] command
Aug 31 13:20:26 pinsood dovecot: imap-login: Fatal: Can't load private ssl_key: Key is for a different cert than ssl_cert
Aug 31 13:20:26 pinsood dovecot: master: Error: service(imap-login): command startup failed, throttling for 2 secs
Aug 31 13:20:37 pinsood dovecot: imap-login: Fatal: Can't load private ssl_key: Key is for a different cert than ssl_cert
Aug 31 13:20:37 pinsood dovecot: master: Error: service(imap-login): command startup failed, throttling for 4 secs

==> /var/log/mail.log <==
Aug 31 13:20:26 pinsood dovecot: master: Error: service(imap-login): command startup failed, throttling for 2 secs
Aug 31 13:20:37 pinsood dovecot: imap-login: Fatal: Can't load private ssl_key: Key is for a different cert than ssl_cert
Aug 31 13:20:37 pinsood dovecot: master: Error: service(imap-login): command startup failed, throttling for 4 secs
Aug 31 13:27:33 pinsood postfix/cleanup[742]: warning: database /etc/postfix/virtual_aliases.db is older than source file /etc/postfix/virtual_aliases
Aug 31 13:27:33 pinsood postfix/pickup[431]: 0E5553F78D: uid=0 from=<root@pinsood.com>
Aug 31 13:27:33 pinsood postfix/trivial-rewrite[743]: warning: database /etc/postfix/virtual_aliases.db is older than source file /etc/postfix/virtual_aliases
Aug 31 13:27:33 pinsood postfix/cleanup[742]: 0E5553F78D: message-id=<20170831102733.0E5553F78D@mail.pinsood.com>
Aug 31 13:27:33 pinsood postfix/qmgr[432]: 0E5553F78D: from=<root@pinsood.com>, size=341, nrcpt=1 (queue active)
Aug 31 13:27:36 pinsood postfix/smtp[744]: 0E5553F78D: to=<mm580486@icloud.com>, relay=mx2.mail.icloud.com[17.142.163.14]:25, delay=3.3, delays=0.02/0.01/1.6/1.7, dsn=2.5.0, status=sent (250 2.5.0 Ok)
Aug 31 13:27:36 pinsood postfix/qmgr[432]: 0E5553F78D: removed
tail: cannot open ‘/var/log/dovecot.log’ for reading: No such file or directory

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I suggest you sort out problems from here https://intodns.com/pinsood.com

Aug 31 13:20:26 pinsood dovecot: imap-login: Fatal: Can’t load private ssl_key: Key is for a different cert than ssl_cert Please read logs next time, they will always have the solution.