Thanks in advance for any feedback.
Our Postfix server is a gateway that forwards email to an internal
SPAM server configured to communicate with GroupWise.
We have noticed a recent slow down in email delivery to and from our
Postfix Servers. The queues do not show any email build up.
When attempting to telnet to the port 25 it may take 1 sec to 60
seconds before the connected message, it may take another 10-60 secs
for the banner to show up.
It may also Time out and disconnect you session.
Depending on the senders retry intervals on their mail server it may
take up to 30 minutes to a day.
No changes to the config files were done prior to noticing the slow
email delivery.
Our environment
postfix-2.2.9-10.2
sles 10
clamav-0.88.2-3.2
amavisd-new-2.3.3-17.2
My main.cf:
address_verify_map = btree:/etc/postfix/verify
alias_maps = hash:/etc/aliases
biff = no
canonical_maps = hash:/etc/postfix/canonical
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/lib/postfix
debug_peer_level = 2
defer_transports =
disable_dns_lookups = no
disable_mime_output_conversion = no
header_checks = pcre:/etc/postfix/header_checks
html_directory = /usr/share/doc/packages/postfix/html
inet_interfaces = all
inet_protocols = all
local_recipient_maps =
mail_owner = postfix
mail_spool_directory = /var/mail
mailbox_command =
mailbox_size_limit = 0
mailbox_transport =
mailq_path = /usr/bin/mailq
manpage_directory = /usr/share/man
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains =
masquerade_exceptions = root
maximal_backoff_time = 4000s
maximal_queue_lifetime = 5d
message_size_limit = 31457280
minimal_backoff_time = 1000s
mydestination = $myhostname localhost.$mydomain
localhost $mydomain
mydomain = mydomain.com
myhostname = myhostname.com
mynetworks = 10.XXX,XXX,XXX, 127.0.0.0/8
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
queue_run_delay = 1000s
readme_directory = /usr/share/doc/packages/postfix/README_FILES
relayhost =
relocated_maps = hash:/etc/postfix/relocated
sample_directory = /usr/share/doc/packages/postfix/samples
sender_canonical_maps = hash:/etc/postfix/sender_canonical
sendmail_path = /usr/sbin/sendmail
setgid_group = maildrop
smtp_sasl_auth_enable = no
smtp_use_tls = no
smtpd_banner = $myhostname NO UCE ESMTP (NO UCE)
smtpd_client_restrictions =
smtpd_helo_required = yes
smtpd_helo_restrictions =
smtpd_recipient_restrictions =
reject_non_fqdn_recipient
reject_non_fqdn_sender
reject_unknown_sender_domain
reject_unknown_recipient_domain
reject_unverified_recipient
permit_mynetworks
check_sender_access hash:/etc/postfix/sender_access
check_sender_access hash:/etc/postfix/rhsbl_sender_exceptions
reject_unverified_recipient
reject_unauth_destination
reject_unauth_pipelining
reject_invalid_hostname
reject_non_fqdn_hostname
reject_rbl_client sbl-xbl.spamhaus.org
reject_rbl_client list.dsbl.org
reject_rbl_client bl.spamcop.net
reject_rhsbl_sender dsn.rfc-ignorant.org
permit
smtpd_sasl_auth_enable = no
smtpd_use_tls = no
strict_8bitmime = no
strict_rfc821_envelopes = yes
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550
virtual_alias_domains = hash:/etc/postfix/virtual
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_mailbox_domains =
myvirtual1.com
myvirtual2.com
Again any help would be appreciated.
Thanks,
Matt
--
Matthew Hebert
mbheb...@gmail.com
