can't I receive or send mail except from the linux box

Redhat 7.2,

I have sendmail up and running 8.11.6-3.

Anyway, If I am on the Linux box I can send mail. However, If I use a windoz box to send mail I get an error.

The connection to the server has failed. Account: 'xxxx.linux-dude.com', Server: 'xxxx.linux-dude.com', Protocol: SMTP, Port: 25, Secure(SSL): No, Socket Error: 10061, Error Number: 0x800CCC0E

I also get this error when mail cannot be sent.

Deferred: Connection refused by xxxx.linux-dude.com

But I can receive mail that was sent from the linux box to itself using the windoz box.

Also, if I send mail from any account like hotmail or yahoo the email dissapears. it never gets to the server.

--------------------------------------
Sendmail config using webmin
--------------------------------------

I have

local domain set
'xxxx.linux-dude.com'

trusted user
myself

outgoing domain
'xxxx.linux-dude.com'

relay domain
'xxxx.linux-dude.com'

alias
myself.

----------------------------------------------------------------
my access file looks like this

localhost.localdomain RELAY
localhost RELAY
127.0.0.1 RELAY

xx.93.xx.240 RELAY
192.168.1.100 RELAY
192.168.1.101 RELAY
xxxx.linux-dude.com RELAY

------------------------------------------------------------------

Any ideas?

Thanks in advance

jobesd

1) Make sure port 25 is accepting connection to everyone except some open relay hosts where you can deny them explicity or use RBL.
2) If your SMTP server is not SSL/TLS-aware, make sure you have disabled it in your email client

>> If I am on the Linux box I can send mail

For your Linux box to send outgoing messages to remote hosts, it doesn't even need to be running a SMTP server at all. Imagine you launch telnet and connect to port 25 and invoke SMTP commands manually, the other end doesn't care if you are running a SMTP server.

>> But I can receive mail that was sent from the linux box to itself using the windoz box

Port 25 doesn't take place at all. Checking your mail, say pop3, that's port 110, and it has nothing to do with port 25.

Don't ask me how to configure Sendmail, because I don't know or care. Sendmail is on the top 5 of most insecure software list (BIND, Samba, webmin and wu-ftpd being the others). Redhat as well is not so secure. Running an out-of-date version (8.12.1 being the lastest) of Sendmail on Redhat makes it extremely insecure and potentially vulnerable to local and remote exploits at any time.
Then who makes the most secure software?
DJB-ware -> http://cr.yp.to/djb.html

I scanned my box and port 25 is not open. How or where do I make the change for port 25

Thanks Jobesd

Problem solved

sendmail.cf file coming with RH7.2 only listens on loopback interface. u can see that in netstat -an

it looks like this

tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN

I Commented following option and restarted the sendmail daemon.

O DaemonPortOptions=Port=smtp,Addr=127.0.0.1, Name=MTA


Then after restarting the daemon using netstat -an.
the output changed to

tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN

My mail now works