[CentOS] Sendmail problem - baffled

Jussi Hirvi listmember at greenspot.fi
Tue May 15 20:48:18 UTC 2012


On 15.5.2012 23.22, Alexander Dalloz wrote:
> It is technically impossible that the telnet to target port 25 succeeds
> from the same system on which the Sendmail gets a connection refused,
> unless Sendmail is configured to use a non-standard target port.

That is why I am baffled. :-/

I could use a way to see what port sendmail is actually using to make 
the contact. My assumption is that when the log entry (see my orig post) 
says "mailer=esmtp,", it implies port 25 - but then it really does not 
make sense that the connection is refused.

On the primary mail server (which I try in vain to contact) I see 
*nothing* about the failed connections in the maillog, even though I 
raised log_level to 19.

Below is my thishost-tx.mc. It looks totally ok to me, but maybe 
somebody else spots something there. This is a dual-sendmail setup, and 
this is the conf for the transmitting sendmail instance.

- Jussi

divert(-1)dnl
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`MTA-TX jh-2012-05')dnl
OSTYPE(`linux')dnl
define(`confSMTP_LOGIN_MSG', `$w.tx.$m Sendmail $v/$Z; $b')dnl MTA-TX
define(`confLOG_LEVEL', `19')dnl
define(`confDEF_USER_ID', ``8:12'')dnl
define(`confTO_CONNECT', `1m')dnl
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
define(`STATUS_FILE', `/var/log/mail/statistics')dnl
define(`UUCP_MAILER_MAX', `2000000')dnl
define(`confUSERDB_SPEC', 
`/etc/mail/userdb.db')dnldefine(`confPRIVACY_FLAGS', 
`authwarnings,novrfy,noexpn,restrictqrun,restrictmai
lq')dnl
define(`confAUTH_OPTIONS', `A')dnl
define(`confTO_QUEUEWARN', `2h')dnl
define(`confTO_QUEUERETURN', `2d')dnl
define(`confREFUSE_LA', `999')dnl disabled; limiting belongs to MTA-RX
define(`confTO_IDENT', `0')dnl
FEATURE(`no_default_msa', `dnl')dnl
FEATURE(`nocanonify')dnl host/dom names considered caninical at MTA-TX
FEATURE(`smrsh', `/usr/sbin/smrsh')dnl
FEATURE(`mailertable', `hash /etc/mail/mailertable.db')dnl
FEATURE(`virtusertable', `hash /etc/mail/virtusertable.db')dnl
FEATURE(redirect)dnl
FEATURE(always_add_domain)dnl
FEATURE(use_cw_file)dnl (= local-host-names)
FEATURE(use_ct_file)dnl
define(`confMAX_DAEMON_CHILDREN', `0') dnl disabled; limiting belongs to 
MTA-RX
FEATURE(local_procmail, `', `procmail -t -Y -a $h -d $u')dnl
EXPOSED_USER(`root')dnl
DAEMON_OPTIONS(`Addr=127.0.0.1,Port=10025,Name=MTA-TX')dnl
FEATURE(`accept_unresolvable_domains')dnl
LOCAL_DOMAIN(`localhost.localdomain')dnl
LOCAL_DOMAIN(`[127.0.0.1]')dnl
LOCAL_DOMAIN(`127.0.0.1')dnl
MAILER(smtp)dnl



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