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Hey to all,
I am having a mail problem in fc6 box .Now the scene is that when i am mailing to anyone for testing its giving ---

send-mail: fatal: file /etc/postfix/main.cf: parameters mail_owner and setgid_group: user postfix and group postdrop have the same group ID: 3003

One more issue related with this is when i am restarting the service of the sendmail then its giving this error---

service sendmail restart
Shutting down sm-client: [FAILED]
Shutting down sendmail: [FAILED]
Starting sendmail: sendmail: fatal: file /etc/postfix/main.cf: parameters mail_owner and setgid_group: user postfix and group postdrop have the same group ID: 3003
[FAILED]
Starting sm-client: sendmail: fatal: file /etc/postfix/main.cf: parameters mail_owner and setgid_group: user postfix and group postdrop have the same group ID: 3003
[FAILED]

Can anyone help me on this error??
will appreciate for the help
Thanks
Rak

Here's a hint from the postfix website.

Quote:

In order to install or upgrade Postfix

Create a user "postfix" with a unique user id and group id. Preferably, this is an account that no-one can log into. The account does not need an executable login shell, and needs no existing home directory.

postfix:*:12345:12345: postfix: /no/where:/no/shell

Make sure there is a corresponding alias in /etc/aliases

postfix: root

Create a group "postdrop" with a group id that is not used by any other user account. Not even by the postfix user account.

postdrop:*:54321:

I says postdrop group should not be used by any other user account.
That's also what your error message says.

Good luck with the rest.