Re: [ilug-cal] [OT]Anyone who wrote/setup his own SMTP Server ?

[Archan]

Subhobroto Sinha wrote:

However, I am aware that it might be possible to setup
a SMTP Relay server on my own machine, in which case I
will be able to DIRECTLY send email WITHOUT requiring
a valid SMTP server !
I hope you people might be able to help me out. If you
can offer/point me to source code for a Local SMTP
Relay server, that will simply be great.
But then, a nice little tutorial to achieve the same
using (freely) available tools is also very welcome.
 

You can use postfix/sendmail/exim/ssmtp . I personally use postfix as my 
smtp server which I run locally in my machine. The configuration is 
quite easy.

1. Install postfix from net/cdrom
      For gentoo - #emerge postfix
      For debian - #apt-get install postfix
2. Edit /etc/postfix/main.cf
       myhostname = localhost      
       inet_interfaces = $myhostname, localhost         
       mydestination = $myhostname, localhost.$mydomain
   * it is assumed that you have Fully Qualified Domain Name.
   * it is assumed that you have localhost configured
3. Do the following to test it -
      #postfix check
         In case of any error/anomality, resolve it by updating main.cf
      #newaliases
      #postfix start
      #mutt -x root
         To: <root>
         Subject: test
         (End message with a . on a line by itself)
            test
         .

      #mutt
      [you should see ur message]
4. Update /etc/init.d/ so that postfix startup automatically at booting time
5. Point you email clients to smtp server running in localhost interface
This kind of configuration is quite good, until you encounter some ultra 
paranoid mail host [like Hotmail]. Normally Hotmail reject the mails 
from SMTP connection, if it cant reverselookup the IP, from which it is 
sent. So, if you SMTP server is configured from 127.0.0.x , Hotmail will 
reject the mail. Anyway, for these kind of situation, you can use 
exim/ssmtp . Exim/ssmtp can be configured to route all of your mails 
though ISP's smtp server. If your ISP is has provided u some SMTP 
account, you can happyly use it from ssmtp/exim

iti
Archan
ps: I f you are interested to know how smtp works, it is good to start 
with ssmtp code. It is very simple.

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