Everyone,
I am putting together a new internal e-mail server using FC3 to replace a slower RH8 server that has been working perfectly except for speed. I am having difficulty getting sendmail to communicate to our relay that is also a RH 8 unit.
The FC3 unit does not appear to be able to send data to the RH 8 system. The maillog file is receiving:
Connection refused by Rh8.domain.com
Interestingly I can telnet Rh8.domain.com 25 from the new FC3 machine and get right to sendmail.
In trying to tinker with iptables, hosts.allow, and the hosts.deny files on both systems I have not been able to make any headway. When I used ifconfig on the FC3 unit I noticed th6 and IP4 protocols.
eth0 Link encap:Ethernet HWaddr 00:11:5B:55:75:2C
inet addr:10.0.0.131 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::211:5bff:fe55:752c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:33180 errors:0 dropped:0 overruns:0 frame:0
TX packets:30041 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3181553 (3.0 MiB) TX bytes:2684147 (2.5 MiB)When I checked sendmail using lsof I found an entry for ip6 but not for ip4. I recked the sendmail.mc file and deactivated :
DAEMON_OPTIONS(`Name=MTA-v4, Family=inet, Name=MTA-v6, Family=inet6')adnl
After doing a restart to sendmail I did another lsof -i and found that it was listening using ip4, but I was still receiving maillog messages as being refused by the RH8.domain.com system. The RH8 network card does not support ip6.
When I found the ip4/ip6 issue I thought I had the problem solved, but there were no changes in the symptons. I am also having a problem with ntp and am wondering if it is related to the same issue as with sendmail. Are there conflicts in using both ip4 and ip6 protocols?
Any ideas?
Thanks ahead of time!
Greg Ennis
