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Solved [Solved] Postfix can't receive email port 25

iLikeIT

New Member


Messages: 4

#1
HI all,

After I rebooted two of my Postfix servers they are no longer able to receive any email on port 25. I tried to telnet to port 25 and it failed. The Postfix service is running and I cannot seem to pinpoint the issue.
Any ideas? I am not sure were to look now.

Thanks!
 

iLikeIT

New Member


Messages: 4

#2
Re: Postfix can't receive email port 25

telnet 127.0.0.1 25 does not work either.

How do I know if there is a firewall active on this machine?

sockstat -4 -p 25 results in
Code:
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS
root         master     1603  12    tcp4            *:25                  *:*
 

iLikeIT

New Member


Messages: 4

#3
Re: Postfix can't receive email port 25

Here is my main.cf:

Code:
queue_directory = /var/spool/postfix
command_directory = /usr/local/sbin
daemon_directory = /usr/local/libexec/postfix
mail_owner = postfix
myorigin = $myhostname
inet_interfaces = all
mydestination = $myhostname
mynetworks = 127.0.0.1
home_mailbox = mail/
relay_domains = mysql:/usr/local/etc/postfix/mysql_relay_domains.cf
transport_maps = mysql:/usr/local/etc/postfix/mysql_transport.cf
local_recipient_maps =
local_transport = error:local delivery disabled
in_flow_delay = 0
fast_flush_domains = $relay_domains
smtpd_banner = mx.mailperimeter.com
local_destination_concurrency_limit = 10
default_destination_concurrency_limit = 50
message_size_limit = 52428800
mailbox_size_limit = 524288000
virtual_mailbox_limit = 524288000
debug_peer_level = 2
sendmail_path = /usr/local/sbin/sendmail
newaliases_path = /usr/local/bin/newaliases
mailq_path = /usr/local/bin/mailq
setgid_group = maildrop
manpage_directory = /usr/local/man
sample_directory = /usr/local/etc/postfix
readme_directory = /usr/local/share/doc/postfix
smtpd_helo_required = yes
smtpd_recipient_restrictions = reject_invalid_hostname, check_helo_access hash:/usr/local/etc/postfix/helo_check_access, check_client_access hash:/usr/local/etc/postfix/whitelist_non_fqdn_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_reverse_client_hostname, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, reject_unauth_destination, check_recipient_access regexp:/usr/local/etc/postfix/recipient_check.regexp, check_sender_access regexp:/usr/local/etc/postfix/sender_check.regexp, check_policy_service inet:127.0.0.1:2525, reject_rbl_client relays.dnsbl.sorbs.net, reject_rbl_client block.dnsbl.sorbs.net, reject_rbl_client zombie.dnsbl.sorbs.net, permit
#smtpd_recipient_restrictions = reject_invalid_hostname, check_client_access hash:/usr/local/etc/postfix/whitelist_non_fqdn_hostname, reject_non_fqdn_hostname, reject_non_fqdn_sender, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain, reject_unauth_pipelining, permit_mynetworks, reject_unauth_destination, check_recipient_access regexp:/usr/local/etc/postfix/recipient_check.regexp, check_sender_access regexp:/usr/local/etc/postfix/sender_check.regexp, reject_unauth_destination, check_policy_service inet:127.0.0.1:2525, permit
#policy_time_limit = 3600
smtpd_hard_error_limit = 20
smtpd_timeout = 300
html_directory = /usr/local/share/doc/postfix
mime_header_checks = regexp:/usr/local/etc/postfix/header_checks.regexp
parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,smtpd_access_maps
data_directory = /var/db/postfix
inet_protocols = ipv4
smtpd_client_connection_count_limit = 0
 

iLikeIT

New Member


Messages: 4

#4
Re: Postfix can't receive email port 25

Figured it out. My Cisco CSS load balancer has the 828 day bug. It has been up for 1300+ days. A simple reboot of the Cisco fixed the problem. Time to upgrade the firmware it seems.