David C. Rankin wrote:
Listmates (Sandy),
I have built a fresh 10.3 server, but smtp performance seems slow. Are
there any tips or tricks to improve the mail sending performance.
There aren't going to be any magic kernel settings to
make mail-handling faster. The reason is that mail
handing is NOT a cpu-bound task, it's disk-I/O and
network-I/O-bound
Therefore, the way to improve the process of a mail server
is to
1: use RAID disk-striping
2: Improve your network connectivity.
Install one or more 4-port Ethernet cards.
Connect the server to several subnets directly
(but beware how you do this, or else your mail
server will suddenly become a router and get a
flood of IP traffic) so that incoming mail can
come in on multiple ethernet ports
simultaneously.
Also: Add memory until the motherboard is maxed-out.
In almost all cases, adding memory is the cheapest,
and most helpful to ALL processes running on a
server (for example, more memory reduces both the
amount of filesystem I/O AND swap disk activity)
> Here are the current settings:
[EMAIL PROTECTED]:/home/david # postconf -n
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
html_directory = /usr/share/doc/packages/postfix/html
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mail_spool_directory = /var/mail
mailbox_command = /usr/bin/procmail -a "$EXTENSION"
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
message_size_limit = 10240000
mydestination = $myhostname, localhost.$mydomain, $mydomain,
guillorylaw.com, rankinlawfirm.com, drrankin.com, txuovercharges.com,
bertinlawoffice.com, darrenbertin.com, tannergarth.com
myhostname = bonza.rbpllc.com
mynetworks_style = subnet
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases
queue_directory = /var/spool/postfix
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 ESMTP $mail_name ($mail_version) (Rankin Law
Firm, PLLC)
smtpd_client_restrictions = check_client_access
cidr:/etc/postfix/client_check.cidr, reject_rbl_client relays.ordb.org,
reject_rbl_client sbl-xbl.spamhaus.org, reject_rbl_client list.dsbl.org
smtpd_hard_error_limit = 3
smtpd_helo_required = yes
smtpd_helo_restrictions = permit_mynetworks, reject_invalid_hostname,
reject_non_fqdn_hostname
smtpd_recipient_restrictions = permit_mynetworks,
reject_unauth_destination, check_recipient_access
pcre:/etc/postfix/recipient_check.pcre
smtpd_sasl_auth_enable = no
smtpd_sender_restrictions = hash:/etc/postfix/access
smtpd_use_tls = no
strict_8bitmime = no
strict_rfc821_envelopes = no
transport_maps = hash:/etc/postfix/transport
unknown_client_reject_code = 550
unknown_local_recipient_reject_code = 550
virtual_alias_domains = hash:/etc/postfix/virtual
virtual_alias_maps = hash:/etc/postfix/virtual
Which of these would affect or help smtp response time? Any tips would
be appreciated.
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