I have a little problem with postfix .

I can do telnet to localhost but not from outside. 25 port seems to be closed

Here my configuration from mail.cf:

myhostname = mail.domain.gr
mydomain = domain.gr
myorigin = $mydomain
inet_interfaces = all
local_recipient_maps = proxy:unixasswd.byname $alias_maps
unknown_local_recipient_reject_code = 550
mynetworks = 10.70.36.0/24, 127.0.0.0/8
relay_domains = $mydestination
smtpd_sasl_auth_enable = yes
smtpd_sasl_security_options = noanonymous
broken_sasl_auth_clients = yes
smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unauth_destination

and i have not edit master.cf.

I have check that at 25port runs only postfix with it's daemon only, i have uninstall sendmail.

Surely my ISP doesn't block 25 and surely i have open 25 port to my router.

Also no firewall

Can someone pls help?

you need to explain your network better, it's a big jump from telnetting on lo to blaming an ISP... where's the rest of the LAN? The router configs?

thank ou for your reply.

as i told i have open port 25 at router.

Surely problem is somewhere at postfix configuration but i really do no know what is missing.

Thank you

first type
$ netstat -tupnl

http://linux.die.net/man/8/netstat

and send me the content at hosts file

if you use the dns whats the configuration for the record mail.domain.gr
and are your sure that the router forwards the packets to your server.
to be sure use tcpdump.

and you need to explain your network more as acid_kewpie told you

how about you let *US* decide what is wrong... that's why you're asking surely??

here from netstat :
tcp 0 0 127.0.0.1:25 0.0.0.0:* LIST

I am MCSE , so i new a little about networking but have no idea from postfix.
I am sure that there is absolutely no problem with port at router or firewall etc.

Mistake has to be somewhere at postfix configuration

thank you

I think you've cut that line off. "LIST" should say "LISTEN" and there should be more after it listing the process that's attached to that port. the config says that is should listen on all interfaces, so if you've restarted the postfix daemon then that should say 0.0.0.0:25 to my knowledge, but it should also say that it is indeed postfix listening.

That "127.0.0.1:25" means you're only listening on localhost. That needs to say "0.0.0.0:25". Look at the postfix docs for inet_interfaces.

thank you for the reply.

i have inet_interfaces=all but it keeps listening only at localhost.

Is there any other paremeter?

thank you

I left uncomment only inet_interfaces=all and now i get this :

tcp 0 0 0.0.0.0:25 0.0.0.0:* LIST

but i still can;t telnet to 25...only to localhost..

That's good. Probably a firewall issue. What does "iptables -L -v" show?

i have close the firewall..
I finally could log in from outside to my smtp with telnet but when i type ehlo domain name it stucks from outside but from inside network when i type ehlo i get response..

it seems like something to block outside connections maybe??

thank you

Are you trying to connect from 10.70.36.0/24?

no..from outside my network...
I did a test user in postfix..i could finally sent message but when they try to reply to me they get 'relay access denied' messsage...

thank you all for your help..

i really appreciate that..

What is you mydestination setting?

Perhaps post the full output of "postconf -n"