Thread: Postfix no route to host

hello all,

i've installed our new server under ubuntu 11.10. i've installed postfix (according docs https://help.ubuntu.com/community/postfix).

sending emails our server ok of destinations. destinations got "no route host".

code:

server:~$ mailq  -queue id- --size-- ----arrival time---- -sender/recipient-------  0c5f79a390     6592 thu may  3 10:13:52  ****@sender.com         (connect asp-mxa.belnet.be[2001:6a8:3c80::155]:25: no route host)                                           ***@receiver.com

i don't know why can't send emails 1 (with our previous server on freebsd, not configured me, went ok). can me ?

!

here commands i've read on french , english ubuntu forums can help.

can ping domain "asp-mxa.belnet.be"

code:

server:~$ ping asp-mxa.belnet.be  ping asp-mxa.belnet.be (193.190.198.178) 56(84) bytes of data.  64 bytes asp-mxa.belnet.be (193.190.198.178): icmp_req=1 ttl=59 time=7.31 ms  64 bytes asp-mxa.belnet.be (193.190.198.178): icmp_req=2 ttl=59 time=7.46 ms  64 bytes asp-mxa.belnet.be (193.190.198.178): icmp_req=3 ttl=59 time=7.35 ms

i can connect using telnet on port 25

code:

server:~$ telnet asp-mxa.belnet.be 25  trying 193.190.198.178...  connected asp-mxa.belnet.be.  escape character '^]'.  220 asp-scan3.belnet.be esmtp canit-appliance  helo asp-mxa.belnet.be  250 asp-scan3.belnet.be hello ******.ovh.net [***.**.***.***], pleased meet you

here result of command "postconf -n" :

code:

server:~$ postconf -n  alias_database = hash:/etc/aliases  alias_maps = hash:/etc/aliases  append_dot_mydomain = no  biff = no  broken_sasl_auth_clients = yes  config_directory = /etc/postfix  home_mailbox = maildir/  inet_interfaces =  inet_protocols =  mailbox_command = procmail -a "$extension"  mailbox_size_limit = 0  mydestination = mail2.****.eu, ****.eu, ****.ovh.net, localhost.ovh.net, localhost  myhostname = *****.eu  mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128  myorigin = /etc/mailname  readme_directory = no  recipient_delimiter = +  relayhost =   smtp_tls_note_starttls_offer = yes  smtp_tls_security_level = may  smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache  smtp_use_tls = yes  smtpd_banner = $myhostname esmtp $mail_name (ubuntu)  smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination  smtpd_sasl_auth_enable = yes  smtpd_sasl_local_domain =   smtpd_sasl_security_options = noanonymous  smtpd_tls_cafile = /etc/ssl/certs/cacert.pem  smtpd_tls_auth_only = no  smtpd_tls_cert_file = /etc/ssl/certs/smtpd.crt  smtpd_tls_key_file = /etc/ssl/private/smtpd.key  smtpd_tls_loglevel = 1  smtpd_tls_received_header = yes  smtpd_tls_security_level = may  smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache  smtpd_tls_session_cache_timeout = 3600s  smtpd_use_tls = yes  tls_random_source = dev:/dev/urandom

here resolv.conf:

code:

server:~$ sudo cat /etc/resolv.conf  [sudo] password ****:   nameserver 127.0.0.1  nameserver 213.186.33.99  search ovh.net

here tracroute asp-mxa-belnet.be

code:

server:~$ sudo traceroute -t -p 25 asp-mxa.belnet.be  traceroute asp-mxa.belnet.be (193.190.198.178), 30 hops max, 60 byte packets   1  vss-5a-6k.fr.eu (176.31.245.253)  0.760 ms * *   2  rbx-g2-a9.fr.eu (178.33.100.70)  1.856 ms  1.865 ms  1.861 ms   3  bru-1-6k.be.eu (94.23.122.138)  2.707 ms  2.708 ms  2.702 ms   4  10ge.cr2.brueve.belnet.net (194.53.172.65)  6.442 ms  6.153 ms  6.132 ms   5  10ge.cr1.brueve.belnet.net (193.191.16.21)  6.104 ms  6.119 ms  6.118 ms   6  belnetlan.cr1.brueve.belnet.net (193.191.2.30)  6.358 ms  6.222 ms  6.299 ms   7  asp-mxa.belnet.be (193.190.198.178)  7.270 ms  7.280 ms  7.082 ms

(connect asp-mxa.belnet.be[2001:6a8:3c80::155]:25: no route host)

it looks it's using ipv6 address reach host. have no idea why be. fix problem creating entry in /etc/hosts machines ipv4 address.

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