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Problemer med Sendmail i Fedora Core
Fra : Per Jørgensen


Dato : 02-06-08 07:32

Hey Gruppe.

Jeg har på mit arbejde skiftet netværksmaske - eftersom vi kolliderede
med en masse private netværk i forbindelse med VPN hos ansatte!
Derfor skiftede jeg netværksmaske!

Men på den ene af mine filservere kan jeg ikke bruge sendmail mere af en
eller anden grund. Det har virket tidligere og virker på de andre
servere også.

Jeg har kigget i /etc/mail/sendmail.mc og /etc/mail/sendmail.cf.
Men det virker lidt som om der er noget helt galt. Normalt ville den jo
bruge en smarthost eller lign - til at sende disse mails igennem, men
det virker på logfilen som om deen kun kan se sig selv - og tester om
brugerne er lokale :
Jun 2 04:02:07 fileserver sendmail[20737]: m52227xS020737:
to=webmaster@xxxxxxx.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=53543, dsn=5.1.1, stat=User unknown
Jun 2 04:02:07 fileserver sendmail[20737]: m52227xS020737:
to=webmaster@xxxxxx.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=53543, dsn=5.1.1, stat=User unknown
Jun 2 04:02:07 fileserver sendmail[20737]: m52227xS020737:
m52227xT020737: return to sender: User unknown
Jun 2 04:02:07 fileserver sendmail[20737]: m52227xT020737:
to=webmaster@xxxxxxx.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=54567, dsn=5.1.1, stat=User unknown

Hvor jeg egentlig ville mene at jeg i sendmail.mc har sat den op til at
sende til vores mailserver poå netværket - men der er bare intet der
kommer ud fra denne maskine !
Hvad er mit problem her på denne maskine.

Jeg har ikke selv installeret denne maskine og har derfor ikke en anelse
om hvad den tidligere person har installeret af finurligheder - da der
intet dokumentation er på dette !
Derfor er jeg kommet frem til at det er sendmail der kører som Daemon,
og derfor vel også denne der burde sende disse mails afsted uden problemer!
--
Med Venlig Hilsen

Per Jørgense/\/

 
 
Mogens Kjaer (02-06-2008)
Kommentar
Fra : Mogens Kjaer


Dato : 02-06-08 08:04

Per Jørgensen wrote:
....
> Jeg har kigget i /etc/mail/sendmail.mc og /etc/mail/sendmail.cf.

Hvad er SMART_HOST sat til i sendmail.mc?

Mogens

--
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Per Jørgensen (02-06-2008)
Kommentar
Fra : Per Jørgensen


Dato : 02-06-08 08:44

Mogens Kjaer skrev:
> Per Jørgensen wrote:
> ...
>> Jeg har kigget i /etc/mail/sendmail.mc og /etc/mail/sendmail.cf.
>
> Hvad er SMART_HOST sat til i sendmail.mc?
>
> Mogens
>
Den er sat til IP adressen på vores interne mailserver!


--
Med Venlig Hilsen

Per Jørgense/\/

Mogens Kjaer (02-06-2008)
Kommentar
Fra : Mogens Kjaer


Dato : 02-06-08 08:55

Per Jørgensen wrote:
....
> Den er sat til IP adressen på vores interne mailserver!

Så må den jo tro at det er mails der skal afleveres lokalt.

Når du har maskeret navne og IP adresser er det lidt svært
at hjælpe...

Mogens


--
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Per Jørgensen (02-06-2008)
Kommentar
Fra : Per Jørgensen


Dato : 02-06-08 09:36

Mogens Kjaer skrev:
> Per Jørgensen wrote:
> ...
>> Den er sat til IP adressen på vores interne mailserver!
>
> Så må den jo tro at det er mails der skal afleveres lokalt.
>
> Når du har maskeret navne og IP adresser er det lidt svært
> at hjælpe...
>
> Mogens
>
>
Så prøver vi bare uden
Her er min sendmail.mc:

divert(-1)dnl
dnl #
dnl # This is the sendmail macro config file for m4. If you make changes to
dnl # /etc/mail/sendmail.mc, you will need to regenerate the
dnl # /etc/mail/sendmail.cf file by confirming that the sendmail-cf
package is
dnl # installed and then performing a
dnl #
dnl # make -C /etc/mail
dnl #
include(`/usr/share/sendmail-cf/m4/cf.m4')dnl
VERSIONID(`setup for Red Hat Linux')dnl
OSTYPE(`linux')dnl
dnl #
dnl # Uncomment and edit the following line if your outgoing mail needs to
dnl # be sent out through an external mail server:
dnl #
dnl define(`SMART_HOST',`87.49.142.40')
dnl #
define(`confDEF_USER_ID',``8:12'')dnl
define(`confTRUSTED_USER', `smmsp')dnl
dnl define(`confAUTO_REBUILD')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
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
dnl #
dnl # The following allows relaying if the user authenticates, and disallows
dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links
dnl #
dnl define(`confAUTH_OPTIONS', `A p')dnl
dnl #
dnl # PLAIN is the preferred plaintext authentication method and used by
dnl # Mozilla Mail and Evolution, though Outlook Express and other MUAs do
dnl # use LOGIN. Other mechanisms should be used if the connection is not
dnl # guaranteed secure.
dnl #
dnl TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl
dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5
LOGIN PLAIN')dnl
dnl #
dnl # Rudimentary information on creating certificates for sendmail TLS:
dnl # make -C /usr/share/ssl/certs usage
dnl #
dnl define(`confCACERT_PATH',`/usr/share/ssl/certs')
dnl define(`confCACERT',`/usr/share/ssl/certs/ca-bundle.crt')
dnl define(`confSERVER_CERT',`/usr/share/ssl/certs/sendmail.pem')
dnl define(`confSERVER_KEY',`/usr/share/ssl/certs/sendmail.pem')
dnl #
dnl # This allows sendmail to use a keyfile that is shared with OpenLDAP's
dnl # slapd, which requires the file to be readble by group ldap
dnl #
dnl define(`confDONT_BLAME_SENDMAIL',`groupreadablekeyfile')dnl
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
define(`confTO_IDENT', `0')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 #
dnl # The -t option will retry delivery if e.g. the user runs over his
quota.
dnl #
FEATURE(local_procmail,`',`procmail -t -Y -a $h -d $u')dnl
FEATURE(`access_db',`hash -T<TMPF> -o /etc/mail/access.db')dnl
FEATURE(`blacklist_recipients')dnl
EXPOSED_USER(`root')dnl
dnl #
dnl # The following causes sendmail to only listen on the IPv4 loopback
address
dnl # 127.0.0.1 and not on any other network devices. Remove the loopback
dnl # address restriction to accept email from the internet or intranet.
dnl #
dnl # DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl
dnl #
dnl # The following causes sendmail to additionally listen to port 587 for
dnl # mail from MUAs that authenticate. Roaming users who can't reach their
dnl # preferred sendmail daemon due to port 25 being blocked or
redirected find
dnl # this useful.
dnl #
dnl DAEMON_OPTIONS(`Port=submission, Name=MSA, M=Ea')dnl
dnl #
dnl # The following causes sendmail to additionally listen to port 465, but
dnl # starting immediately in TLS mode upon connecting. Port 25 or 587
followed
dnl # by STARTTLS is preferred, but roaming clients using Outlook
Express can't
dnl # do STARTTLS on ports other than 25. Mozilla Mail can ONLY use STARTTLS
dnl # and doesn't support the deprecated smtps; Evolution <1.1.1 uses smtps
dnl # when SSL is enabled-- STARTTLS support is available in version 1.1.1.
dnl #
dnl # For this to work your OpenSSL certificates must be configured.
dnl #
dnl DAEMON_OPTIONS(`Port=smtps, Name=TLSMTA, M=s')dnl
dnl #
dnl # The following causes sendmail to additionally listen on the IPv6
loopback
dnl # device. Remove the loopback address restriction listen to the network.
dnl #
dnl # NOTE: binding both IPv4 and IPv6 daemon to the same port requires
dnl # a kernel patch
dnl #
dnl DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl
dnl #
dnl # We strongly recommend not accepting unresolvable domains if you
want to
dnl # protect yourself from spam. However, the laptop and users on computers
dnl # that do not have 24x7 DNS do need this.
dnl #
FEATURE(`accept_unresolvable_domains')dnl
dnl #
dnl FEATURE(`relay_based_on_MX')dnl
dnl #
dnl # Also accept email sent to "localhost.localdomain" as local email.
dnl #
LOCAL_DOMAIN(`localhost.localdomain')dnl
dnl #
dnl # The following example makes mail from this host and any additional
dnl # specified domains appear to be sent from mydomain.com
dnl #
dnl MASQUERADE_AS(`mydomain.com')dnl
dnl #
dnl # masquerade not just the headers, but the envelope as well
dnl #
dnl FEATURE(masquerade_envelope)dnl
dnl #
dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com
as well
dnl #
dnl FEATURE(masquerade_entire_domain)dnl
dnl #
dnl MASQUERADE_DOMAIN(localhost)dnl
dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl
dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl
dnl MASQUERADE_DOMAIN(mydomain.lan)dnl
MAILER(smtp)dnl
MAILER(procmail)dnl


Og derfra direte i logfilen uden ændringer
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022696:
to=webmaster@insatech.com, ctladdr=<root@insatech.com> (8/0),
delay=00:00:00, mailer=local, pri=30328, dsn=5.1.1, stat=User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022696:
to=webmaster@insatech.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=30328, dsn=5.1.1, stat=User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022696:
m528YIfr022698: postmaster notify: User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022698:
to=webmaster@insatech.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=1369, dsn=5.1.1, stat=User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022698:
to=webmaster@insatech.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=1369, dsn=5.1.1, stat=User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022698:
m528YIfs022698: return to sender: User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfs022698:
to=webmaster@insatech.com, ctladdr=root (8/0), delay=00:00:00,
mailer=local, pri=2393, dsn=5.1.1, stat=User unknown
Jun 2 10:34:18 fileserver sendmail[22698]: m528YIfr022698: Losing
../qfm528YIfr022698: savemail panic

Der hvor jeg undrer mig er at useren er unknown!
Dette er med linien mail -s "Test fra filserver" webmaster@insatech.com
< test.txt

--
Med Venlig Hilsen

Per Jørgense/\/

Mogens Kjaer (02-06-2008)
Kommentar
Fra : Mogens Kjaer


Dato : 02-06-08 10:05

Per Jørgensen wrote:
....
> dnl define(`SMART_HOST',`87.49.142.40')

Der skal nok stå:

define(`SMART_HOST',`87.49.142.40')dnl

ellers er det bare en kommentar.

Når du har rettet dette i sendmail.mc
skal du køre

make -C /etc/mail

og genstarte sendmail.

Hvilken IP har den pågældende maskine i forhold
til hvad der står som MX for dette domæne?

$ nslookup
> set type=mx
> insatech.com
Server: 172.20.0.2
Address: 172.20.0.2#53

Non-authoritative answer:
insatech.com mail exchanger = 10 dkcphmx06.softcom.dk.
insatech.com mail exchanger = 10 dkcphmx08.softcom.dk.

Authoritative answers can be found from:
> set type=A
> dkcphmx06.softcom.dk.
Server: 127.0.0.1
Address: 127.0.0.1#53

Non-authoritative answer:
Name: dkcphmx06.softcom.dk
Address: 213.150.40.147
> dkcphmx08.softcom.dk.
Server: 127.0.0.1
Address: 127.0.0.1#53

Non-authoritative answer:
Name: dkcphmx08.softcom.dk
Address: 194.192.15.165

Mogens

--
Mogens Kjaer, Carlsberg A/S, Computer Department
Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
Phone: +45 33 27 53 25, Fax: +45 33 27 47 08
Email: mk@crc.dk Homepage: http://www.crc.dk

Per Jørgensen (02-06-2008)
Kommentar
Fra : Per Jørgensen


Dato : 02-06-08 10:35

Mogens Kjaer skrev:
> Per Jørgensen wrote:
> ...
>> dnl define(`SMART_HOST',`87.49.142.40')
>
> Der skal nok stå:
>
> define(`SMART_HOST',`87.49.142.40')dnl
>
> ellers er det bare en kommentar.
>
> Når du har rettet dette i sendmail.mc
> skal du køre
>
> make -C /etc/mail
>
> og genstarte sendmail.
>
Derefter kan sendmail slet ikke startes ved at fjerne denne dnl fra linien!
Står bare og skriver starter sendmail: "curser blinker"
Hvor den bare bliver stående!

Dette var så beregnet omkring ens DNS navn på localhost - Men i grunden
endte det sgu med at virke nu!

> Hvilken IP har den pågældende maskine i forhold
> til hvad der står som MX for dette domæne?
>
> $ nslookup
> > set type=mx
> > insatech.com
> Server: 172.20.0.2
> Address: 172.20.0.2#53

Det er softscan spamfilter - som der køres igennem til vores domæner.
Det er deres scanner maskine der skal rammes som den primære MX!


Tusind tak for hjælpen Mogens - nu kan jeg tjekke aty backup'en kører
korrekt!
--
Med Venlig Hilsen

Per Jørgense/\/

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