Checking services

[Dalani]

What is the menu item or CLI syntax to check what services are running????
And what MTA is being used ?? Exim or Postfix???

My Ubuntu 5.04 connects to the internet at bootup using the Internet supersrver. I can browse and recieve emails via Evolution mail client but cannot send mail, ping,or traceroute.

any help would be appreciated

EDIT:
I check a how to thread and synaptic to answer my first two questions. (typing ps -ax lists all services running and postfix is installed but not shown running) But still need help on solving the email problem.

[iwanabeguru]

ping maybe not allowed (ICMP protokol)

to send email you need set up the smtp server , your ISP provide it

[Dalani]

ping maybe not allowed (ICMP protokol)

to send email you need set up the smtp server , your ISP provide it

I already configured evolution with a POP account and set it to SmTP.
THe ISP provided me POP address mail.myisp.com which I assume is the same for smtp.

my postfix etc/postfix/main.cf file:

# See /usr/share/postfix/main.cf.dist for a commented, more complete version

smtpd_banner = $myhostname ESMTP $mail_name (Ubuntu)
biff = no

# appending .domain is the MUA's job.
append_dot_mydomain = no

# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h

myhostname = localhost.localdomain
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = localhost.localdomain, localhost.localdomain, localhost
relayhost = 
mynetworks = 127.0.0.0/8
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = loopback-only

[daark.child]

Well, if you are using your ISPs email services, then there is no need to tinker with postfix. If you can't send mail, make sure you entered the right details for your ISP in evolution. If the details are correct, then its because of some other problem and not postfix.

[Dalani]

You are correct: It seems that something is blocking ping and traceroute etc...ICMP related. The obvious for that I guess is the firestarter firewall I have running (for a while without problems) until I enabled the internet connectiion at bootup. Could it be possible the internet superserver is interfering with the iptables????

The obvious test is turn off the internet superserver with

~$ sudo /etc/init.d/inetd stop

and see what happens....

BINGO! Ping worked after:

--- dalani.com ping statistics ---
15 packets transmitted, 15 received, 0% packet loss, time 14007ms...

PS the raison-d'etre of internet at boot up is to allow any user on my system to use the internet without having to know the root passwrd to activate the WvDial ppp internet connection. If any Linux network guru know a way of doing this without interference let us know.
some doc inetd docs: http://www.antipope.org/charlie/linux/shopper/166.hardening-linux.html