Hi Ralph, Thanks for the input. Yes, 209.212.104.70 is the correct IP address. When I type # telnet mail.primaryblue.com 25 I get a connection, which tells me that the outside world cannot access this mail domain. Here is output from the lsof -i command, searching for '25' and for snedmail. # [root@blackhawk log]# lsof -i | grep -i send sendmail 770 root 4u IPv4 1586 TCP *:smtp (LISTEN) [root@blackhawk log]# lsof -i | grep 25 xinetd 747 root 6u IPv4 1525 TCP blackhawk:32769 (LISTEN) Is that all OK ? I am hosting a couplpe of domains on this server. How do I check which one is the primary? There are not any TCP wrappers enabled, this mail server is sitting behind at least 2 firewalls. Where does sendmail keeps it's logs, and what do I check for ? Thanks for your help ! Jason ----- Original Message ----- From: "Ralf Spenneberg" <lists@spenneberg.org> To: <psyche-list@redhat.com> Sent: Tuesday, February 18, 2003 10:19 AM Subject: Re: External mail on RH8 again > Am Die, 2003-02-18 um 09.06 schrieb Jason Dale: > > Hi again, > > > > Here is a screendump of the errors I am getting when I try to send mail > > from the outside world to my testmail account. > > > This is what I get: > $ host -t mx primaryblue.com > primaryblue.com mail is handled by 5 mail.primaryblue.com. > primaryblue.com mail is handled by 10 mx01.citec.net. > $ host mail.primaryblue.com > mail.primaryblue.com has address 209.212.104.70 > $ telnet mail.primaryblue.com 25 > Trying 209.212.104.70... > Hangs forever I guess. > > $ ping mail.primaryblue.com > PING mail.primaryblue.com (209.212.104.70) from 192.168.0.202 : 56(84) > bytes of > data. > 64 bytes from 209.212.104.70: icmp_seq=1 ttl=44 time=702 ms > 64 bytes from 209.212.104.70: icmp_seq=2 ttl=44 time=715 ms > 64 bytes from 209.212.104.70: icmp_seq=3 ttl=44 time=681 ms > > Hangs forever I guess. > Is mail.primaryblue.com your primary mailserver? > Is 209.212.104.70 the correct IP address? > Type "lsof" -i and see if the port 25 is opened by sendmail > Do you have tcpwrappers enabled (/etc/hosts.deny: "ALL:ALL") > > Restart sendmail and send the logs > > Cheers, > > Ralf > -- > Ralf Spenneberg > RHCE, RHCX > > IPsec/PPTP Kernels for Red Hat Linux: > http://www.spenneberg.com/.net/.org/.de > Honeynet Project Mirror: http://honeynet.spenneberg.org > Snort Mirror: http://snort.spenneberg.org > > > > -- > Psyche-list mailing list > Psyche-list@redhat.com > https://listman.redhat.com/mailman/listinfo/psyche-list -- Psyche-list mailing list Psyche-list@redhat.com https://listman.redhat.com/mailman/listinfo/psyche-list
