No route to host

[Hernan Dario Arredondo]

hi everyone,

This time my problem is:

When I try to send a mail to the domain orden.com.co my machine say 
"Deferred: mail.orden.com.co.: No route to host", first I think "Is a 
DNS problem" then I try :


# dig mx orden.com.co

; <<>> DiG 9.2.1 <<>> mx orden.com.co
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45193
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 6

;; QUESTION SECTION:
;orden.com.co.                  IN      MX

;; ANSWER SECTION:
orden.com.co.           838     IN      MX      10 mail.orden.com.co.

;; AUTHORITY SECTION:
co.                     117238  IN      NS      SAELL.CC.COLUMBIA.EDU.
co.                     117238  IN      NS      CDCNET.UNIANDES.EDU.co.
co.                     117238  IN      NS      AYAX.UNIANDES.EDU.co.
co.                     117238  IN      NS      CMCL2.NYU.EDU.
co.                     117238  IN      NS      MINTAKA.UNIANDES.EDU.co.
co.                     117238  IN      NS      KENSHIN.UNIANDES.EDU.co.

;; ADDITIONAL SECTION:
SAELL.CC.COLUMBIA.EDU.  117238  IN      A       128.59.59.218
CDCNET.UNIANDES.EDU.co. 30858   IN      A       157.253.1.13
AYAX.UNIANDES.EDU.co.   117238  IN      A       157.253.50.3
CMCL2.NYU.EDU.          117238  IN      A       128.122.253.92
MINTAKA.UNIANDES.EDU.co. 117238 IN      A       200.31.69.106
KENSHIN.UNIANDES.EDU.co. 117238 IN      A       200.57.34.101

;; Query time: 16 msec
;; SERVER: 200.13.224.3#53(200.13.224.3)
;; WHEN: Sat Mar 27 10:06:37 2004
;; MSG SIZE  rcvd: 303

Everything is OK ! then I do ping to mail.orden.com.co, and get this:

# ping -c3 mail.orden.com.co
PING halcon.orden.com.co (209.88.14.34) from 200.75.94.26 : 56(84) bytes 
of data.
64 bytes from mail.orden.com.co (209.88.14.34): icmp_seq=1 ttl=118 
time=149 ms
64 bytes from mail.orden.com.co (209.88.14.34): icmp_seq=2 ttl=118 
time=85.8 ms
64 bytes from mail.orden.com.co (209.88.14.34): icmp_seq=3 ttl=118 
time=105 ms

--- halcon.orden.com.co ping statistics ---
3 packets transmitted, 3 received, 0% loss, time 2005ms
rtt min/avg/max/mdev = 85.822/113.796/149.635/26.641 ms

Then I don`t know what is hapening
This is the only domain who I can send mail....
Someone knows what is happening... ???

Regards


Hernan Dario