I've just installed Centos 4 on an Acer G310 server - everything's gone well
except I'm not able to SMTP connect to my upstream mail server (I've
installed postfix + MailScanner) - I managed to find sort out the dovecot
side of things but SMTP remains quite silent - the maillog shows an
attempted connect but then a timeout:
May 9 13:08:45 woking postfix/smtp[7895]: deliver_request_final: send:
"connect to mailhost.zen.co.uk[212.23.3.98]: Connection timed out" -1
If I connect manually (telnet mailhost.zen.co.uk 25) nothing happens - no
response is shown and I presume if I left things for long enough I'd see a
timeout message? Here's the output from netstat -pant:
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address
State PID/Program name
tcp 0 0 0.0.0.0:32769 0.0.0.0:*
LISTEN 2048/rpc.statd
tcp 0 0 0.0.0.0:111 0.0.0.0:*
LISTEN 2028/portmap
tcp 0 0 0.0.0.0:21 0.0.0.0:*
LISTEN 2242/vsftpd
tcp 0 0 127.0.0.1:631 0.0.0.0:*
LISTEN 2181/cupsd
tcp 0 0 0.0.0.0:25 0.0.0.0:*
LISTEN 5201/master
tcp 0 1 192.168.101.11:32847 212.23.3.98:25
SYN_SENT 7930/telnet
tcp 0 0 :::993 :::*
LISTEN 3416/dovecot
tcp 0 0 :::995 :::*
LISTEN 3416/dovecot
tcp 0 0 :::110 :::*
LISTEN 3416/dovecot
tcp 0 0 :::143 :::*
LISTEN 3416/dovecot
tcp 0 0 :::80 :::*
LISTEN 2345/httpd
tcp 0 0 :::22 :::*
LISTEN 2217/sshd
tcp 0 0 :::25 :::*
LISTEN 5201/master
tcp 0 0 :::443 :::*
LISTEN 2345/httpd
tcp 0 0 ::ffff:192.168.101.11:22 ::ffff:192.168.101.20:4450
ESTABLISHED 3319/0
tcp 0 192 ::ffff:192.168.101.11:22 ::ffff:192.168.101.20:4758
ESTABLISHED 5724/1
I notice that there's an attempt to make a connection but that's it - any
ideas what might be causing this - I'm not running a server-based firewall.
Over to you with thanks.
Nigel
