When i'm sending sinle mail there is no problem. But when mails are in the queue there is a problem. When posfix trying to deliver mail to the sender from queue every time i've got in log file:

Nov 23 09:37:45 mail postfix/smtp: 1C115103653: to=<xx@xxxxxxx.xx>, relay=none, delay=63336, delays=62778/180/379/0, dsn=4.4.1, status=deferred (connect to secmx.efekt.pl:25: Connection timed out)

For example i'm sending a mail to mail gmail account, when the queue is empty, mail is delivered quickly. The same situation, but there are view messages in the queue: every try to connect with google mail server is ending by message "Connection timed out", and again status is deferred.

Below is my Postfix configuration, help

root@mail:/var/www# postconf -n
address_verify_poll_delay = 10s
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
append_dot_mydomain = no
biff = no
broken_sasl_auth_clients = yes
config_directory = /etc/postfix
default_destination_rate_delay = 2s
home_mailbox = Maildir/
ignore_mx_lookup_error = yes
inet_interfaces = all
inet_protocols = all
mailbox_command =
mailbox_size_limit = 0
mydestination = zapytanie.scriptodemo.pl, mail.zapytanie.scriptodemo.pl, localhost
myhostname = mail.zapytanie.scriptodemo.pl
mynetworks =,
myorigin = $myhostname
readme_directory = no
recipient_delimiter = +
relayhost =
smtp_connect_timeout = 0
smtp_host_lookup = dns,native
smtp_tls_note_starttls_offer = yes
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
smtpd_recipient_restrictions = permit_auth_destination,permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_local_domain =
smtpd_sasl_security_options = noanonymous
smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem
smtpd_tls_auth_only = no
smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt
smtpd_tls_key_file = /etc/ssl/private/smtpd.key
smtpd_tls_loglevel = 1
smtpd_tls_received_header = yes
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_tls_session_cache_timeout = 3600s
smtpd_use_tls = yes
tls_random_source = dev:/dev/urandom