From: Matthew Hebert (mbhebertgmail.com)
Date: Thu Feb 01 2007 - 13:22:51 CST

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Sandy,

An example of what is happening.
1. Send an email from outside source
2. view logs to see if transaction takes place
3. logs never show email entering our system.

Does not happen to all external sources. We are receiving mail, but I used
mxtoolbox.com to run diagnostics and to which the results of the transaction
time is over 10 seconds. Earlier this week it was .05 seconds or something
that fast.

This is my postconf -n

alias_maps = hash:/etc/aliases
canonical_maps = hash:/etc/postfix/canonical
command_directory = /usr/sbin
config_directory = /etc/postfix
content_filter = vscan:[127.0.0.1]:10025
daemon_directory = /usr/lib/postfix
debug_peer_level = 2
default_destination_concurrency_limit = 20
default_process_limit = 500
defer_transports =
disable_dns_lookups = no
header_checks = regexp:/etc/postfix/header_checks
html_directory = /usr/share/doc/packages/postfix/html
inet_interfaces = all
local_destination_concurrency_limit = 2
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 = 2h
maximal_queue_lifetime = 2d
message_size_limit = 15730000
minimal_backoff_time = 450s
mydestination = $myhostname localhost.$mydomain localhost
$mydomai n
mydomain = dss.state.la.us
myhostname = xxx.xxx.xxx
mynetworks = xxx.xxx.xxx,xxx.xxx.xxx
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
queue_run_delay = 225s
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
smtpd_client_restrictions =
smtpd_helo_required = yes
smtpd_helo_restrictions =
smtpd_recipient_restrictions =
    reject_non_fqdn_recipient
        reject_unverifie d_recipient
    reject_unknown_recipient_domain
    reject_non_fqdn_sender
    reject_unknown_sender_domain
    permit_mynetworks
    reject_unauth_destin ation
    reject_invalid_hostname
    check_sender_access
    hash:/etc/postfix/sender_access
    check_helo_access regexp:/etc/postfix/helo_checks
    reject_unauth_pipelining
    reject_rbl_client
    bl.spamcop.net
    reject_rbl_client zen.spamhaus.org
    check_sender_access
    hash:/etc/postfix/rhsbl_sender_excep tions
    reject_rhsbl_sender dsn.rfc-ignorant.org
    permit
smtpd_sasl_auth_enable = no
smtpd_sender_restrictions = hash:/etc/postfix/access
smtpd_use_tls = no
strict_rfc821_envelopes = yes
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550
virtual_mailbox_domains =
    xxx.xxx.xxx
    xxx.xxx.xxx

Thanks for you help.

On 2/1/07, Sandy Drobic <postfix-usersjapantest.homelinux.com> wrote:
>
> Matthew Hebert wrote:
> > We have recently encountered slow transaction time to our Postfix server
> > from external email. I am a newbie to Postfix and not sure if this has
> > anything to do with the Postfix server or our DNS server.
> >
> > Not quite sure where to troubleshoot.
> >
> > Any suggestions?
>
> Show output of "postconf -n" and the loglines where the problem is
> apparent.
>
> As a shot in the dark, you might want to check the blacklists you are
> using. For example, ordb.org has recently gone the way of the dinosaurs,
> and if you are still using the rbl, then Postfix might experience long
> delays or even timeouts, before a mail is accepted.
>
>
> --
> Sandy
>
> List replies only please!
> Please address PMs to: news-reply2 () japantest (.) homelinux (.) com
>

--
Matthew Hebert
mbhebertgmail.com

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