I am getting the follwoing error

----- Transcript of session follows -----
... while talking to pbimailc.prodigy.net.:
>>> MAIL From:<nobody@gt_s2.mydomain.com> SIZE=8265
<<< 553 5.1.8 <nobody@gt_s2.mydomain.com>... Domain of sender address nobody@gt_s2.mydomain.com does not exist
501 5.6.0 Data format error

When I am at the server typing
# telenet mydomain.com 25
I can send a mail to joe@aol.com from kevin@mydomain.com.

But from outlook when I send an e-mail to joe@aol.com from kevin@mydomain.com, i get yet another error "550 5.71. saying that relaying is denied"

my files are as follow:
Under /etc/hosts
127.0.0.1 gt_s2 localhost.localdomain localhost
127.0.0.1 gt_s2.mydomain.com
192.168.1.120 gt_s2.mydomain.com

Under /etc/HOSTNAME
gt_s2.mydomain.com

Under /etc/mail/access (Ofcourse I create the db file with makemap hash command)
localhost.localdomain RELAY
localhost RELAY
127.0.0.1 RELAY
MyStaticIP RELAY
192.168.1 RELAY
gt_s2.mydomain.com RELAY

Under /etc/mail/ip_allow
MyStaticIP

Under /etc/mail/local-host-name
mydomain.com
localhost.localdomain
local host
192.168.1.120

Under /etc/mail/name_allow
mydomain.com

Under /etc/mail/relay_allow
mydomain.com
192.168.1.120
gt_s2.mydomain.com

Need be I could place ny sendmail.mc file also. I just don't know what is it that I am doing wrong? Please advise!

Hi,

About the relaying denied problem of yours, you can try this:

vi /etc/mail/sendmail.cf
search for "relay" (without the doublequotes )

u should see a line like
FR-o /etc/mail/relay-domains

enter the domains that u want to relay for, 1 per line in this file /etc/mail/relay-domains
for your clients on outlook express, enter the network address that the clients belong to.

- Subhasis

kevinm2

From your post I assume that

gt_s2 is your host or machine name

mydomain.com is a FQDN which will resolve via DNS

It looks like Sendmail is trying to resolve gt_s2.mydomain.com via DNS which it obviously cannot do unless your DNS record has a CNAME or alias of gt_s2


Edit /etc/mail/access
localhost.localdomain RELAY
localhost RELAY
127.0.0.1 RELAY
MyStaticIP RELAY
192.168.1 RELAY
gt_s2.mydomain.com RELAY

To

localhost.localdomain RELAY
localhost RELAY
127.0.0.1 RELAY
MyStaticIP RELAY
192.168.1 RELAY
mydomain.com RELAY

Now mail from user@mydomain.com should resolve via DNS

No guarantees but worth a try

Pete

Thank you guys it worked. I added the IP address of my outlook machine to the access file, and it start working.

It's funny how sometimes you don't see the obvious in this business!


Now that I have your attention. Any idea how I can setup the server so it syncs it's date and time with a valid source. Can you also recommend a source. Thanks again. -- Kevin

hi,

good things are working....

for syncing time and date use ntp. (network time protocol)

Regards

Subhasis

Is ntp a service installed in Linux by default or I have to install and configure it. I would appreciate it, If you could give me another lead. Thanks again. -- Kevin

Hi Kevin,

NTP is a service that is usually installed. Check for it bu issuing the command:

# rpm -qa | grep ntp

it should return atleast.
ntp-4.1.2-0.rc1.2

your package version might be different, depending on what version of Linux u r using. If it is not installed, then find the package on the installation disks, and then running the command:

# rpm -ivh <package-name>

After that, find out a good ntp server, there are a number of good servers listed in http://www.eecis.udel.edu/~mills/ntp/clock2b.html
pick any one from there and add it to your /etc/ntp.conf file under the Heading "# --- GENERAL CONFIGURATION ---"

then restart the ntpd daemon

# service ntpd restart

and set it so that the ntpd id started at bootup
# chkconfig ntpd on

Thats about all that needs to be done

Cheers

Subhasis

Hey Kevin,

Just a passing thought..... if the config below is for your server, I would strongly suggest that you upgrade the kernel from 2.4.7 to sonething latest in the 2.4 series.

Server Host: gt_s2 (127.0.0.1)
Database Host: localhost (127.0.0.1)
Server OS: Linux 2.4.7-10
Database: MySQL 4.0.20-log
Server: Apache/2.0.50 (Unix)
mod_perl/1.99_13 Perl/v5.8.4
mod_ssl/2.0.50 OpenSSL/0.9.7d
PHP/4.3.8 DAV/2
PHP Version: 4.3.8 (Zend: 1.3.0)

-Subhasis

Thank you very much. I will give it a try in the morning.