I have created a mail server using dovecot and postfix(Ubuntu ec2-aws). I'm receiving emails from any domain. but I can only send emails to gmail. When i try to send email to other domains,
CA58541898 1067 Sat May 7 09:22:44 [email protected]
(conversation with mail.senderdomain.com[162.xxx.xxx.xx] timed out while receiving the initial server greeting) mail.senderdomain.com
above message is shown when I sudo mailq thanks in advance.
This is my postfix/main.cf
`
smtpd_banner = $myhostname ESMTP $mail_name (mydomain.online)
biff = no
append_dot_mydomain = no
readme_directory = no
compatibility_level = 2
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_sasl_auth_enable = yes
broken_sasl_auth_clients = yes
smtpd_sasl_authenticated_header = yes
virtual_transport = lmtp:unix:private/dovecot-lmtp
smtpd_helo_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname
smtpd_recipient_restrictions =
permit_mynetworks
permit_sasl_authenticated,
reject_non_fqdn_recipient,
reject_unknown_recipient_domain,
reject_unlisted_recipient,
reject_unauth_destination
smtpd_sender_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_non_fqdn_sender,
reject_unknown_sender_domain
smtpd_relay_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
defer_unauth_destination
myhostname = mail.mydomain.online
mydomain =mail.mydomain.online
myorigin = $mydomain
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
mydestination = localhost $mydomain
relayhost =
mynetworks = 3.221.159.203 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 localhost
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
relay_domains = $mydomain
Handing off local delivery to Dovecot's LMTP, and telling it where to store mail
virtual_transport = lmtp:unix:private/dovecot-lmtp
virtual_mailbox_domains = mysql:/etc/postfix/virtual-domains.cf
virtual_mailbox_maps = mysql:/etc/postfix/virtual-users.cf
virtual_alias_maps = mysql:/etc/postfix/virtual-aliases.cf,
mysql:/etc/postfix/virtual-email2email.cf
disable_vrfy_command = yes
strict_rfc821_envelopes = yes
smtpd_delay_reject = yes
smtpd_helo_required = yes
smtp_always_send_ehlo = yes
smtpd_timeout = 30s
smtp_helo_timeout = 15s
smtp_rcpt_timeout = 15s
smtpd_recipient_limit = 40
minimal_backoff_time = 180s
maximal_backoff_time = 3h
smtp_tls_security_level=may
invalid_hostname_reject_code = 550
non_fqdn_reject_code = 550
unknown_address_reject_code = 550
unknown_client_reject_code = 550
unknown_hostname_reject_code = 550
unverified_recipient_reject_code = 550
unverified_sender_reject_code = 550
smtpd_use_tls=yes
smtpd_tls_auth_only = yes
smtp_tls_security_level = may
smtpd_tls_security_level = may
smtpd_tls_cert_file=/etc/letsencrypt/live/mail.mydomain.online/fullchain.pem
smtpd_tls_key_file=/etc/letsencrypt/live/mail.mydomain.online/privkey.pem
smtpd_sasl_security_options = noanonymous, noplaintext
smtpd_sasl_tls_security_options = noanonymous
