Sendmail - No route to host
Sendmail - No route to host
(OP)
On AIX 4.3 setting aspmx.l.google.com as the relay host gives "No route to host". I can ping the host and telnet to that address on port 25, but I cannot telnet to the hostname on port 25.
# ping -c 1 aspmx.l.google.com
PING aspmx.l.google.com: (209.85.225.27): 56 data bytes
64 bytes from 209.85.225.27: icmp_seq=0 ttl=49 time=77 ms
----aspmx.l.google.com PING Statistics----
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 77/77/77 ms
# telnet 209.85.225.27 25
Trying...
Connected to 209.85.225.27.
Escape character is '^]'.
220 mx.google.com ESMTP v4si3279980icx.53
# telnet aspmx.l.google.com 25
Trying...
telnet: connect: A route to the remote host is not available.
I tried to connect to another mailer (telnet mta1171.mail.mud.yahoo.com 25) and that connected.
So, we know that the hostname will resolve and that port 25 is not being blocked.
What do I look at next?
Thanks
-MattO
# ping -c 1 aspmx.l.google.com
PING aspmx.l.google.com: (209.85.225.27): 56 data bytes
64 bytes from 209.85.225.27: icmp_seq=0 ttl=49 time=77 ms
----aspmx.l.google.com PING Statistics----
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 77/77/77 ms
# telnet 209.85.225.27 25
Trying...
Connected to 209.85.225.27.
Escape character is '^]'.
220 mx.google.com ESMTP v4si3279980icx.53
# telnet aspmx.l.google.com 25
Trying...
telnet: connect: A route to the remote host is not available.
I tried to connect to another mailer (telnet mta1171.mail.mud.yahoo.com 25) and that connected.
# telnet mta1171.mail.mud.yahoo.com 25
Trying...
Connected to mta1171.mail.mud.yahoo.com.
Escape character is '^]'.
220 mta1171.mail.mud.yahoo.com ESMTP YSmtp service ready
Trying...
Connected to mta1171.mail.mud.yahoo.com.
Escape character is '^]'.
220 mta1171.mail.mud.yahoo.com ESMTP YSmtp service ready
So, we know that the hostname will resolve and that port 25 is not being blocked.
What do I look at next?
Thanks
-MattO
RE: Sendmail - No route to host
RE: Sendmail - No route to host
PING aspmx.l.google.com: (209.85.225.27): 56 data bytes
The telnet command shows that connections to that host on port 25 are allowed (no firewall blocking):
Trying...
Connected to 209.85.225.27.
This telnet command shows that I can connect using a hostname:
Trying...
Connected to mta1171.mail.mud.yahoo.com.
So why does telnet aspmx.l.google.com 25 fail on the AIX machine?
- It works from every other machine on my network that I have tried.
RE: Sendmail - No route to host