Hi, I've just started working with sendmail om my RedHat 7.1 machine and up til now I can only receive e-mail. All attempts to send fail with dsn 4.0.0. "No route to host", eventhough I'm able to connect to the webserver of the domain. I hope someone is able to help me with this. Here are (some) details: Linux lserv02 2.4.2-2 #1 Sun Apr 8 20:41:30 EDT 2001 i686 unknown File: /etc/resolv.conf search blahblah nameserver 192.168.99.138 File: /etc/hosts # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost localhost.localdomain localhost 192.168.99.10 lserv01.blahblah lserv01 192.168.99.20 lserv02.blahblah mail.blahblah www.blahblah www.blahblah.nl 213.75.12.34 planet.nl Netstat -tap Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 *:32768 *:* LISTEN 552/rpc.statd tcp 0 0 *rinter *:* LISTEN 775/lpd Waiting tcp 0 0 *:mysql *:* LISTEN 914/mysqld tcp 0 0 *:netbios-ssn *:* LISTEN 700/smbd tcp 0 0 *op3 *:* LISTEN 749/xinetd tcp 0 0 *:sunrpc *:* LISTEN 537/portmap tcp 0 0 *:x11 *:* LISTEN 996/X tcp 0 0 *:10000 *:* LISTEN 977/perl tcp 0 0 *:http *:* LISTEN 838/httpd tcp 0 0 *:ftp *:* LISTEN 749/xinetd tcp 0 0 *:ssh *:* LISTEN 729/sshd tcp 0 0 *:telnet *:* LISTEN 749/xinetd tcp 0 0 *:smtp *:* LISTEN 809/sendmail: accep tcp 0 0 *:https *:* LISTEN 838/httpd tcp 0 0 lserv02.blahblah:32927 80.67.86.63:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32879 a194-109-192-7.de:https ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32921 a194-109-192-9.dep:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32893 a194-109-192-25.de:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32896 a194-109-192-6.dep:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32897 a194-109-192-8.dep:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32899 66.249.93.99:http ESTABLISHED 1730/mozilla-bin tcp 0 0 lserv02.blahblah:32912 66.249.93.99:http ESTABLISHED 1730/mozilla-bin File: /etc/mail/local-host-names # local-host-names - include all aliases for your machine here. lserv02.blahblah mail.blahblah www.blahblah wclnt05.blahblah blahblah.nl File: /etc/mail/relay_domains blahblah blahblah.nl File: /etc/mail/virtusertable [email protected] [email protected]blah [email protected] [email protected]blah [email protected] [email protected]blah Sendmail messages: <[email protected] (1001/100), delay=00:00:34, xdelay=00:00:15, mailer=esmtp, pri=30051, relay=planet.nl. [213.75.12.30], dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected] (1001/100), delay=00:19:22, xdelay=00:00:10, mailer=esmtp, pri=120051, relay=planet.nl. [213.75.12.54], dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (500/100), delay=01:27:07, xdelay=00:00:00, mailer=esmtp, pri=300391, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=01:57:54, xdelay=00:00:00, mailer=esmtp, pri=391243, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=02:07:04, xdelay=00:00:00, mailer=esmtp, pri=480407, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=17:46:19, xdelay=00:00:00, mailer=esmtp, pri=750453, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected] (1001/100), delay=21:21:52, xdelay=00:00:21, mailer=esmtp, pri=210051, relay=planet.nl. [213.75.12.46], dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (500/100), delay=22:29:37, xdelay=00:00:00, mailer=esmtp, pri=390391, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=23:00:24, xdelay=00:00:00, mailer=esmtp, pri=481243, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=23:09:34, xdelay=00:00:00, mailer=esmtp, pri=570407, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host <[email protected]> (1001/100), delay=1+14:48:49, xdelay=00:00:00, mailer=esmtp, pri=840453, relay=planet.nl., dsn=4.0.0, stat=Deferred: planet.nl.: No route to host Thanks for any advice you may have to offer, Ronald.
What's the output of Code: ifconfig and Code: route -nee ? What's the output of Code: ping -c2 google.com and Code: ping -c2 64.233.187.99 ? Also have a look here: http://www.howtoforge.com/faq/11_32_en.html
Dear Falko, the extra info you requested: Command: ifconfig eth0 Link encap:Ethernet HWaddr 00:02:B3:2B:A7:B5 inet addr:192.168.99.20 Bcast:192.168.99.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:310 errors:0 dropped:0 overruns:0 frame:0 TX packets:302 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 Interrupt:9 Base address:0xa400 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:86 errors:0 dropped:0 overruns:0 frame:0 TX packets:86 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 Command: route -nee Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface MSS Window irtt 192.168.99.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 40 0 0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 40 0 0 0.0.0.0 192.168.99.138 0.0.0.0 UG 0 0 0 eth0 40 0 0 Command: ping -c2 google.com PING google.com (64.233.167.99) from 192.168.99.20 : 56(84) bytes of data. 64 bytes from 64.233.167.99: icmp_seq=0 ttl=239 time=104.760 msec 64 bytes from 64.233.167.99: icmp_seq=1 ttl=239 time=99.963 msec --- google.com ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/mdev = 99.963/102.361/104.760/2.419 ms Command: ping -c2 64.233.187.99 PING 64.233.187.99 (64.233.187.99) from 192.168.99.20 : 56(84) bytes of data. 64 bytes from 64.233.187.99: icmp_seq=0 ttl=240 time=100.347 msec 64 bytes from 64.233.187.99: icmp_seq=1 ttl=240 time=99.972 msec --- 64.233.187.99 ping statistics --- 2 packets transmitted, 2 packets received, 0% packet loss round-trip min/avg/max/mdev = 99.972/100.159/100.347/0.367 ms Hope this helps (you). I do not find anything (obvious) wrong with it. Kind Regards, Ronald.
Dear Falko, I have looked at the information at the URL and set my sendmail option accordingly. However, nothing changes. I'm still at a loss. Kind Regards, Ronald
No, it's not the firewall (which does not function correctly btw) but it's the router. The router is unable to lookup/resolve MX records. The problem has been solved by adding the nameserver of the ISP to resolv.conf. Thanks for your guidance! Ronald
