Bienvenido(a) a Alcance Libre 10/09/2025, 02:00
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Índice del foro > Todo acerca de Linux > Redes y Servidores |
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acambro |
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Todo bien.
He revisado varias veces los manuales de este sitio para corregir mi problema, sin embargo no encuentro la solucion. Tengo mi servidor de correo como open relays, es decir cualquier spammer puede utilizar mi server para el envio masivo de correo. Tengo habilitado mailscanner con la ultima version, ademas de spamassassin, segun los manuales de este sitio. He aqui un ejemplo: MAIL FROM: <supertool@mxtoolbox.com> 250 2.1.0 <supertool@mxtoolbox.com>... Sender ok [842 ms] RCPT TO: <test@example.com> 250 2.1.5 <test@example.com>... Recipient ok [827 ms] QUIT Utilizo centos i386 5.9. Sendmail 8.13 |
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moy |
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![]() ![]() ![]() ![]() ![]() Miembro Activo Estado: desconectado ![]() Identificado: 29/11/08 Mensajes: 263 |
El problema esque esta aceptando relay, necesitas subir tu configuracion para verla asi sin informacion no se analizar el problema
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Gracias, aqui mi configuracion de sendmail.mc
PHP Formatted Code divert(-1)dnldnl # 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 linux')dnl OSTYPE(`linux')dnl dnl # dnl # Do not advertize sendmail version. dnl # define(`confSMTP_LOGIN_MSG', `$j Sendmail; $b')dnl dnl # dnl # default logging level is 9, you might want to set it higher to dnl # debug the configuration dnl # dnl define(`confLOG_LEVEL', `9')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', `smtp.your.provider')dnl dnl # define(`confDEF_USER_ID', ``8:12'')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 define(`STATUS_FILE', `/var/log/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 # 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 # Please remember that saslauthd needs to be running for AUTH. dnl # TRUST_AUTH_MECH(`EXTERNAL DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl define(`confAUTH_MECHANISMS', `EXTERNAL GSSAPI DIGEST-MD5 CRAM-MD5 LOGIN PLAIN')dnl dnl # dnl # Rudimentary information on creating certificates for sendmail TLS: dnl # cd /usr/share/ssl/certs; make sendmail.pem dnl # Complete usage: dnl # make -C /usr/share/ssl/certs usage dnl # define(`confCACERT_PATH', `/etc/pki/tls/certs')dnl define(`confCACERT', `/etc/pki/tls/certs/ca-bundle.crt')dnl define(`confSERVER_CERT', `/etc/pki/tls/certs/midominio.go.cr.tld.crt')dnl define(`confSERVER_KEY', `/etc/pki/tls/private/midominio.go.cr.tld.key')dnl 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(`confMAX_RCPTS_PER_MESSAGE', `50')dnl define(`confBAD_RCPT_THROTTLE', `2')dnl define(`confPRIVACY_FLAGS',`goaway')dnl define(`confMAX_HEADERS_LENGTH', `24576')dnl define(`confMAX_MESSAGE_SIZE', `10485760')dnl define(`confMAX_DAEMON_CHILDREN', `5')dnl define(`confCONNECTION_RATE_THROTTLE', `4')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 following limits the number of processes sendmail can fork to accept dnl # incoming messages or process its message queues to 20.) sendmail refuses dnl # to accept connections once it has reached its quota of child processes. dnl # dnl define(`confMAX_DAEMON_CHILDREN', `20')dnl dnl # dnl # Limits the number of new connections per second. This caps the overhead dnl # incurred due to forking new sendmail processes. May be useful against dnl # DoS attacks or barrages of spam. (As mentioned below, a per-IP address dnl # limit would be useful but is not available as an option at this writing.) dnl # dnl define(`confCONNECTION_RATE_THROTTLE', `3')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 # For using Cyrus-IMAPd as POP3/IMAP server through LMTP delivery uncomment dnl # the following 2 definitions and activate below in the MAILER section the dnl # cyrusv2 mailer. dnl # dnl define(`confLOCAL_MAILER', `cyrusv2')dnl dnl define(`CYRUSV2_MAILER_ARGS', `FILE /var/lib/imap/socket/lmtp')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 # DAEMON_OPTIONS(`Port=smtp, 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 # 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 # 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 DAEMON_OPTIONS(`port=smtp,Addr=::1, Name=MTA-v6, Family=inet6')dnl dnl # dnl # enable both ipv6 and ipv4 in sendmail: dnl # dnl DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6') 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 # 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 # MASQUERADE_AS(`midominio.go.cr')dnl dnl # dnl # masquerade not just the headers, but the envelope as well dnl # FEATURE(masquerade_envelope)dnl dnl # dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as well 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 FEATURE(`enhdnsbl', `bl.spamcop.net', `"Spam blocked see: http://spamcop.net/bl.shtml?"$&{client_addr}', `t')dnl MAILER(smtp)dnl MAILER(procmail)dnl dnl MAILER(cyrusv2)dnl[code] ******Archivo access [code]# Check the /usr/share/doc/sendmail/README.cf file for a description # of the format of this file. (search for access_db in that file) # The /usr/share/doc/sendmail/README.cf is part of the sendmail-doc # package. # # by default we allow relaying from localhost... Connect:localhost.localdomain RELAY Connect:localhost RELAY Connect:127.0.0.1 RELAY Connect:194.194.8.2 RELAY 222 REJECT 221 REJECT 220 REJECT 219 REJECT 218 REJECT 212 REJECT 211 REJECT 210 REJECT 203 REJECT 202 REJECT 140.109 REJECT 133 REJECT 61 REJECT 60 REJECT 59 REJECT 58 REJECT 68 REJECT mercedes.quesada@gmail.com REJECT asesorias.creativas2008@yahoo.com REJECT noreply@googlegroups.com REJECT campanada3@gmail.com REJECT piculla@yahoo.com REJECT piculla38@yahoo.es REJECT .piculla REJECT doisdejulhoonline@gmail.com REJECT .marketing@ibcooperation.com REJECT IT Trade 24 REJECT clickandgotowebsite@gmail.com REJECT visitenuestrosite@gmail.com REJECT test@ticktock.oit.umn.edu REJECT spam@gh-in-f27.1e100.net REJECT webmaster@pnetlink.net REJECT spam@desamparados.go.cr REJECT wind@desamparados.go.cr REJECT .facebookmail.com REJECT .facebook REJECT notification+zj4o2_z_=0c6@facebookmail.com REJECT webmaster@desamparados.go.cr REJECT postmaster@desamparados.go.cr REJECT fcu.suncoastschool@usa.com REJECT schools.clients@nycmail.com REJECT fcu.school@usa.com REJECT school REJECT test@mnuleaders.mb.ca REJECT noresponder@desamparados.go.cr REJECT cqqdrxcok@hotmail.com REJECT noreply@desamparados.go.cr REJECT spammers.com.ar REJECT yourporn.net REJECT spam@longrun.ru REJECT .spam REJECT spam REJECT info@mp3@system.net REJECT admin@megasy.com REJECT test@gouv.qc.ca REJETC test@jsnetworks.net REJECT spam@trinet.co.jp REJECT ******Archivo relay-domains proxy.desamparados.go.cr Equipo DMZ, esta entre la WAN y mi server de correo 201.201.105.xx IP fuera de mi lan para permitir correos 201.199.173.xx IP fuera de mi lan para permitir correos 200.105.99.xx IP fuera de mi lan para permitir correos ********** Listo, cualquier otra duda con gusto le indicare. |
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moy |
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![]() ![]() ![]() ![]() ![]() Miembro Activo Estado: desconectado ![]() Identificado: 29/11/08 Mensajes: 263 |
En estos archivos que tienes
local-host-names trusted-users y no te falta un Cwmidonimio.net ? |
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acambro |
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Correcto, ya le agregue Cwmidominio.go.cr
En el archivo local-host-names midominio.go.cr mail.midominio.go.cr En el archivo trusted-users No tengo ningun contenido |
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Joel Barrios Dueñas |
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![]() ![]() ![]() ![]() ![]() Admin ![]() Estado: desconectado ![]() Identificado: 17/02/07 Mensajes: 1761 Localización:Mexico |
Es 'normal' que el servidor pueda enviarse a si mismo correo para los dominios locales. Es un defecto de diseño del protocolo SMTP que se compensa implementando DKIM y SPF.
Si tu servidor permite enviar correo hacia cualquier otro dominio distinto a los dominios que tienes en local-host-names, entonces si eres un open relay. |
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acambro |
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Todo bien.
Justamente es ese el problema, hay muchos test en la web para comprobar dicha situación, open relay, y en todos ellos se indica que mi server se encuentra abierto. No respeta mi configuración de relay-domains. |
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Joel Barrios Dueñas |
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![]() ![]() ![]() ![]() ![]() Admin ![]() Estado: desconectado ![]() Identificado: 17/02/07 Mensajes: 1761 Localización:Mexico |
BASH Formatted Code define(`confAUTH_OPTIONS', `A')dnldnl # dnl # The following allows relaying if the user authenticates, and disallows dnl # plaintext authentication (PLAIN/LOGIN) on non-TLS links dnl # define(`confAUTH_OPTIONS', `A p')dnl Sólo debes usar uno de los dos. Usar ambos los anula. |
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Gracias, he realizado tantas pruebas que se me fue ese error, queda habilitada la opcion define(`confAUTH_OPTIONS', `A p'
![]() Pero continúo con el problema, mi server es open relay. |
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acambro |
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![]() ![]() ![]() ![]() ![]() Participa poco Estado: desconectado ![]() Identificado: 04/10/07 Mensajes: 15 |
Gracias por sus comentarios, al fin la solucion simplemente agregue FEATURE(`relay_hosts_only'
![]() ok. |
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Contenido generado en: 0.34 segundos |
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