what am I missing, getting SMTP to work

Jeremy A. Rosengren jeremy at rosengren.org
Fri Apr 30 19:04:33 UTC 2004


Mike Rambour wrote:
> At 04:59 AM 4/30/2004, you wrote:
> 
>> Mike Rambour wrote:
>> >   I am configuring a new machine and I can't get it to work.  I am
>> > using Core1, all the patches and Postfix.  I am trying to use my
>> > Linux box as a outgoing mail server from home and not use my ISP's
>> > SMTP, I can send mail from the Linux machine but not from my home
>> > machines (another Linux for me and Windows for my wife and daughter).
>> >
>>
>> See my inserts below...
>>
>> >    the output of nmap is (From work to home not the same net) says
>> > smtp is Closed but I cant figure out why:
>> > PORT   STATE  SERVICE
>> > 21/tcp open   ftp
>> > 22/tcp open   ssh
>> > 25/tcp closed smtp
>> > 80/tcp open   http
>> >
>> >    my iptables looks like this
>> > ACCEPT     all  --  anywhere             anywhere           state
>> > RELATED,ESTABLISHED
>> > ACCEPT     tcp  --  anywhere             anywhere           state NEW
>> > tcp dpt:smtp
>> > ACCEPT     tcp  --  anywhere             anywhere           state NEW
>> > tcp dpt:http
>> > ACCEPT     tcp  --  anywhere             anywhere           state NEW
>> > tcp dpt:ftp
>> > ACCEPT     tcp  --  anywhere             anywhere           state NEW
>> > tcp dpt:ssh
>> > REJECT     all  --  anywhere             anywhere
>> > reject-with icmp-host-prohibi
>> >
>> >   I am using postfix and ps output says
>> > root      1735  0.0  0.4  7140  620 ?        S    Apr14   0:00
>> > sendmail: accepting connections
>> > smmsp     1744  0.0  0.3  7316  412 ?        S    Apr14   0:00
>> > sendmail: Queue runner at 01:00:00 for /var/spool/clientmqueue
>>
>> Based on the above ps output, your running sendmail, not postfix. 
>> Sendmail,
>> by default, is configured to only listen on localhost. If your wanting to
>> use postfix as your MTA, then please run "redhat-switch-mail" to 
>> configure
>> the proper links in /etc/alternatives.
> 
> 
>    I had already done the switch and rebooted but sendmail was running 
> again.  I am going to look into doing the switch manually this time to 
> confirm.  I also had already editied main.cf to listen to all devices as 
> a test and that did not help.
> 
>  Thank you for the help, I will go play some more
> 
>         mike
> 
> 

# chkconfig sendmail off
# service sendmail stop

Just because you've used redhat-switch-mail to change all the symbolic 
links doesn't mean you've "turned off" the service.

-- jeremy





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