 | | | sendmail configuration on redhat | sendmail configuration on redhat 2003-01-16 - By Jason Dale
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Hi There !
Sendmail can handle POP3 and SMTP jobs quite nicely.
As far as I know , Sendmail by default will only listen for requests on your
local
Machine. You will need to edit your sendmail.mc file and specifically
enable sendmail to receive network requests as well. Try this : ( As root )
(These are the steps you would use with sendmail-8 (See http://ail-8.ora-code.com).12.5-7. If you use an
earlier version of sendmail , there may be differences )
1) BACKUP your sendmail.mc file :
# cp -i /etc/mail/sendmail.mc /etc/mail/sendmail.mc.`date '+%Y%m%d'`
( This will create a backup in the form of sendmail.mc.yyyymmdd to give the
file a date as part of it's name )
2) Edit your sendmail.mc file and look for the line which reads :
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')
3) Place a 'dnl' before this line so that it looks like this :
dnl DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')
4) BACKUP your /etc/sendmail.cf file like this :
# cp -i /etc/mail/sendmail.cf /etc/mail/sendmail.cf.`date '+%Y%m%d'`
The reason you are backing up the sendmail.cf file is that if anything
goes wrong with the m4 command in step 5 , you will WIPE OUT your
main configuration file !
5) Run this command to regenerate the original sendmail.cf file :
# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf
6) While not always necessary , I personally recommend that you restart
the sendmail service :
# service sendmail restart
Bear in mind that you will be needing to use the /etc/mail/access and /etc/mail
/access.db files in the near future to control who can relay through your mail
server to send mail to the outside world. Otherwise , your users will
get alot of '550 prohibited by administrator' bounces.
If you need any further assistance , let me know !
Regards , Jason Dale
-- -- Original Message -- --
From: Gentian Hila
To: seawolf-list@(protected)
Sent: Thursday, January 16, 2003 2:59 PM
Subject: sendmail configuration on redhat
As you can imagine i have installed fully RH 7.1 and wanted to configure
sendmail to act as full email server, which means SMTP and Pop3 server
altogether in the same machine (if that is possible) Sendmail is already
installed there, but it seems to work only for the local machine. I do not want
to compile again the whole sendmail.cf file since it is a huge work . Is there
any place where i can find some information just how to modify sendmail.cf file
in order to accomplish what i need (or at least to find a sendmail.mc file).
I have read the Howto's on redhat site about sendmail but it doesn't include
something of how to implement everything in one machine.
is it ok that i have installed all the packages of Redhat to make possible
for Sendmail to run or do i have to install redhat only as a server ?
Any help would be appreciated.
Genti
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<DIV><FONT face=Arial size=3>Hi There !</FONT></DIV>
<DIV><FONT face=Arial size=3></FONT> </DIV>
<DIV><FONT face=Arial>Sendmail can handle <FONT face=Arial>POP3 and SMTP jobs
quite nicely.</FONT>
<DIV><FONT size=2></FONT></FONT> </DIV></DIV>
<DIV><FONT face=Arial size=3>As far as I know , Sendmail by default will only
listen for requests on your local</FONT></DIV>
<DIV><FONT face=Arial>Machine. You will need to edit your sendmail.mc file and
specifically </FONT></DIV>
<DIV><FONT face=Arial>enable sendmail to receive network requests as well.
</FONT><FONT face=Arial>Try this : ( As root )</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> (These are the steps you would use with
sendmail-8 (See http://ail-8.ora-code.com).12.5-7. If you use an </FONT></DIV>
<DIV><FONT face=Arial> earlier version of sendmail , there may be
differences )</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>1) BACKUP your sendmail.mc file :</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> # cp -i
/etc/mail/sendmail.mc /etc/mail/sendmail.mc.`date
'+%Y%m%d'`</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> ( This will create a backup in the
form
of sendmail.mc.yyyymmdd to give the </FONT></DIV>
<DIV><FONT face=Arial> file a date as part
of it's name )</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>2) Edit your sendmail.mc file and look for the line which
reads :</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA') </FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>3) Place a 'dnl' before this line so that it looks like
this :</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> dnl
DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>4) BACKUP your /etc/sendmail.cf file like this
:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial># cp -i
/etc/mail/sendmail.cf /etc/mail/sendmail.cf.`date
'+%Y%m%d'`</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial> The reason you are backing up the
sendmail.cf file is that if anything</FONT></DIV>
<DIV><FONT face=Arial> goes wrong with the m4 command
in
step 5 , you will WIPE OUT your</FONT></DIV>
<DIV><FONT face=Arial> main configuration file
!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>5) Run this command to regenerate the original
sendmail.cf file :</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial># m4 /etc/mail/sendmail.mc
> /etc/mail/sendmail.cf</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>6) While not always necessary , I personally
recommend that you restart </FONT></DIV>
<DIV><FONT face=Arial> the sendmail service
:</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial># service sendmail restart</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Bear in mind that you will be needing to use the
/etc/mail/access and /etc/mail/access.db files in the near future to control
who
can relay through your mail server to send mail to the outside world. Otherwise
, your users will</FONT></DIV>
<DIV><FONT face=Arial>get alot of '550 prohibited by administrator' bounces.
</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>If you need any further assistance , let me know
!</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Regards , Jason Dale</FONT></DIV>
<DIV><FONT face=Arial> </FONT></DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT:
#000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">-- -- Original Message -- -- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=gentian_hila@(protected) href="mailto:gentian_hila@(protected)">Gentian
Hila</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=seawolf-list@(protected)
href="mailto:seawolf-list@(protected)">seawolf-list@(protected)</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, January 16, 2003 2:59
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> sendmail configuration on
redhat</DIV>
<DIV><BR></DIV>
<P>As you can imagine i have installed fully RH 7.1 and wanted to configure
sendmail to act as full email server, which means SMTP and Pop3 server
altogether in the same machine (if that is possible) Sendmail is already
installed there, but it seems to work only for the local machine. I do not
want to compile again the whole sendmail.cf file since it is a huge work
. Is there any place where i can find some information just how to
modify
sendmail.cf file in order to accomplish what i need (or at least to find a
sendmail.mc file).</P>
<P>I have read the Howto's on redhat site about sendmail but it doesn't
include something of how to implement everything in one machine.</P>
<P>is it ok that i have installed all the packages of Redhat to make possible
for Sendmail to run or do i have to install redhat only as a server ?</P>
<P>Any help would be appreciated. </P>
<P>Genti</P>
<P><BR>
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