Topic: Sending to SMTP 25 hungs
==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.5-1
- Linux/BSD distribution name and version: Ubuntu-Server 14.04.2
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro? Yes
- Related log if you're reporting an issue:
====
I have I very busy server... for some users in local_net 192.168/16 is enabled SMTP 25 (without authentication)
It's very strange but sometimes emails goes, but sometimes just stuck and saiting for timeouts...
postconf -n
alias_database = hash:/etc/postfix/aliases
alias_maps = hash:/etc/postfix/aliases
allow_min_user = no
allow_percent_hack = no
biff = no
body_checks = pcre:/etc/postfix/body_checks.pcre
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = smtp-amavis:[127.0.0.1]:10024
daemon_directory = /usr/lib/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debug_peer_list = 192.168.0.0/16
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
default_destination_concurrency_limit = 100
default_destination_recipient_limit = 100
default_process_limit = 100
disable_vrfy_command = yes
dovecot_destination_recipient_limit = 1
enable_original_recipient = no
header_checks = pcre:/etc/postfix/header_checks
home_mailbox = Maildir/
inet_interfaces = all
inet_protocols = all
lmtp_tls_mandatory_protocols = !SSLv2 !SSLv3
lmtp_tls_protocols = !SSLv2 !SSLv3
mail_owner = postfix
mailbox_command = /usr/lib/dovecot/deliver
mailq_path = /usr/bin/mailq
maximal_backoff_time = 1000s
message_size_limit = 39321600
minimal_backoff_time = 300s
mydestination = $myhostname, localhost, localhost.localdomain
mydomain = mail.domain.tld
myhostname = mail.domain.tld
mynetworks = 127.0.0.1, 192.168.0.0/16
myorigin = mail.domain.tld
newaliases_path = /usr/bin/newaliases
postscreen_access_list = permit_mynetworks, cidr:/etc/postfix/postscreen_access.cidr
postscreen_blacklist_action = enforce
postscreen_dnsbl_action = enforce
postscreen_dnsbl_reply_map = texthash:/etc/postfix/postscreen_dnsbl_reply
postscreen_dnsbl_sites = zen.spamhaus.org*3 b.barracudacentral.org*2
postscreen_dnsbl_threshold = 2
postscreen_dnsbl_whitelist_threshold = -2
postscreen_greet_action = enforce
proxy_read_maps = $canonical_maps $lmtp_generic_maps $local_recipient_maps $mydestination $mynetworks $recipient_bcc_maps $recipient_canonical_maps $relay_domains $relay_recipient_maps $relocated_maps $sender_bcc_maps $sender_canonical_m
aps $smtp_generic_maps $smtpd_sender_login_maps $transport_maps $virtual_alias_domains $virtual_alias_maps $virtual_mailbox_domains $virtual_mailbox_maps $smtpd_sender_restrictions $sender_dependent_relayhost_maps
queue_directory = /var/spool/postfix
recipient_bcc_maps = proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_user.cf proxy:ldap:/etc/postfix/ldap/recipient_bcc_maps_domain.cf
recipient_delimiter = +
relay_domains = $mydestination proxy:ldap:/etc/postfix/ldap/relay_domains.cf
sender_bcc_maps = proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_user.cf proxy:ldap:/etc/postfix/ldap/sender_bcc_maps_domain.cf
sender_dependent_relayhost_maps = proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_domain.cf, proxy:ldap:/etc/postfix/ldap/sender_dependent_relayhost_maps_user.cf
sendmail_path = /usr/sbin/sendmail
setgid_group = postdrop
smtp-amavis_destination_recipient_limit = 1
smtp_destination_concurrency_limit = 100
smtp_mx_session_limit = 100
smtp_tls_CAfile = $smtpd_tls_CAfile
smtp_tls_loglevel = 0
----
Spider Email Archiver: On-Premises, lightweight email archiving software developed by iRedMail team. Supports Amazon S3 compatible storage and custom branding.