 | | | timeouts in sendmail | timeouts in sendmail 2002-08-19 - By Gary Stark
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I have a Redhat 7.3 installation with Sendmail 8.11.6. It 's all
working almost perfectly: mail goes out as I want it to, and some
mail is coming in.
That 's the problem: it 's only some mail that is coming in.
I 'm seeing messages that are indicating timeout issues on the
sites that are not getting through. These are typical of the
messages that I 'm seeing:
g7IFMep06892: timeout waiting for input from mail-03.iinet.net.au
during message collect
g7IGNop07141: timeout waiting for input from [203.241.120.219]
during message collect
g7IGOTp07145: timeout waiting for input from
user.office.outpost.com during message collect
g7IHR5p07396: collect: premature EOM: Connection reset by
relay.wishlist.com.au
g7IHR5p07396: SYSERR(root): collect: I/O error on connection from
relay.wishlist.com.au, from= <service@(protected) >:
Connection reset by relay.wishlist.com.au
The problem seems to be consitent with that of fragmentation of
the packets coming in to my host, but I cannot see how I can
adjust this.
This is my sendmail.mc file
divert(-1)
dnl This is the sendmail macro config file. If you make changes to
this file,
dnl you need the sendmail-cf rpm installed and then have to
generate a
dnl new /etc/sendmail.cf by running the following command:
dnl
dnl m4 /etc/mail/sendmail.mc > /etc/sendmail.cf
dnl
include(`/usr/share/sendmail-cf/m4/cf.m4 ')
VERSIONID(`linux setup for Red Hat Linux ')dnl
OSTYPE(`linux ')
dnl Uncomment and edit the following line if your mail needs to be
sent out
dnl through an external mail server:
dnl define(`SMART_HOST ',`smtp.your.provider ')
define(`confDEF_USER_ID ',``8:12 ' ')dnl
undefine(`UUCP_RELAY ')dnl
undefine(`BITNET_RELAY ')dnl
define(`confAUTO_REBUILD ')dnl
define(`confTO_CONNECT ',`10m ')
define(`confTRY_NULL_MX_LIST ',true)dnl
define(`confDONT_PROBE_INTERFACES ',true)dnl
define(`PROCMAIL_MAILER_PATH ',`/usr/bin/procmail ')dnl
define(`ALIAS_FILE ', `/etc/aliases ')dnl
dnl define(`STATUS_FILE ', `/etc/mail/statistics ')dnl
define(`UUCP_MAILER_MAX ', `2000000 ')dnl
define(`confUSERDB_SPEC ', `/etc/mail/userdb.db ')dnl
define(`confPRIVACY_FLAGS ',
`authwarnings,novrfy,noexpn,restrictqrun ')dnl
define(`confAUTH_OPTIONS ', `A ')dnl
TRUST_AUTH_MECH(`DIGEST-MD5 CRAM-MD5 LOGIN
PLAIN ')dnl
dnl define(`confAUTH_MECHANISMS ', `DIGEST-MD5 CRAM-MD5
LOGIN PLAIN ')dnl
dnl define(`confTO_QUEUEWARN ', `4h ')dnl
dnl define(`confTO_QUEUERETURN ', `5d ')dnl
dnl define(`confQUEUE_LA ', `12 ')dnl
dnl define(`confREFUSE_LA ', `18 ')dnl
dnl FEATURE(delay_checks)dnl
FEATURE(`no_default_msa ',`dnl ')dnl
FEATURE(`smrsh ',`/usr/sbin/smrsh ')dnl
FEATURE(`mailertable ',`hash -o /etc/mail/mailertable.db ')dnl
FEATURE(`virtusertable ',`hash -o /etc/mail/virtusertable.db ')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl
FEATURE(use_ct_file)dnl
dnl The '-t ' option will retry delivery if e.g. the user runs over his
quota.
FEATURE(local_procmail,` ',`procmail -t -Y -a $h -d $u ')dnl
FEATURE(`access_db ',`hash -o /etc/mail/access.db ')dnl
FEATURE(`blacklist_recipients ')dnl
EXPOSED_USER(`root ')dnl
dnl This changes sendmail to only listen on the loopback device
127.0.0.1
dnl and not on any other network devices. Comment this out if you
want
dnl to accept email over the network.
dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA ')
FEATURE(relay_entire_domain) dnl
dnl NOTE: binding both IPv4 and IPv6 daemon to the same port
requires
dnl a kernel patch
dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6,
Family=inet6 ')
dnl We strongly recommend to comment this one out if you want
to protect
dnl yourself from spam. However, the laptop and users on
computers that do
dnl not have 24x7 DNS do need this.
FEATURE(`accept_unresolvable_domains ')dnl
dnl FEATURE(`relay_based_on_MX ')dnl
MAILER(smtp)dnl
MAILER(procmail)dnl
Cwlocalhost.localdomain dnl
FEATURE(`rbl ') dnl
dnl FEATURE(`accept_unqualified_senders ') dnl
The connection is a DSL connection through a D-Link DSL300
modem to a DLS DI-713P acting as a router. Traffic on port 25 is
routed to 192.168.0.60, which is the correct address for the box
hosting the sendmail server.
As the messages that I 'm not getting are, by and large, messages
that I want to get, this is becoming a frustrating problem. Could
somebody here please point me at what I need to change in order
to get this working as it should be?
g.
Gary Stark
gstark@(protected)
http://RedbacksWeb.com
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