[CentOS] postfix install error: fatal file /etc/postfix/main.cf: parameter setgid_group: unknown group name: postdrop
Ned Slider
ned at unixmail.co.uk
Tue Aug 26 14:36:32 UTC 2008
Rainer Traut wrote:
> Hi,
>
> sys: Centos 5.2 x86_64
>
> Trying to switch from sendmail to postfix I did:
>
> # yum remove sendmail
>
> which resulted in erasing of:
> mdadm sendmail-doc sendmail sendmail-cf mutt fetchmail redhat-lsb
>
> I did then:
>
> yum -y install redhat-lsb.x86_64 postfix
>
> and got this error:
>
> Installing: postfix ######################### [1/2]
> postfix: fatal: file /etc/postfix/main.cf: parameter setgid_group:
> unknown group name: postdrop
> warning: group postdrop does not exist - using root
> warning: group postdrop does not exist - using root
> warning: group postdrop does not exist - using root
> warning: group postdrop does not exist - using root
> Installing: redhat-lsb ######################### [2/2]
>
> I checked and indeed there is no group postdrop on the system.
> On an El5 system I see the group.
>
> Thx
> Rainer
>
You don't need to remove sendmail, you can just use system-switch-mail
to set postfix as the MTA.
There is documentation on setting up a basic postfix server (on CentOS
5) on the Wiki here:
http://wiki.centos.org/HowTos/postfix
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