Perfect! Many thanks!

In our group we use Peagsus Mail in a Win Server 2003 network. The client PCs are running  MS Windows NT, 2000, XP SP3 and Win7. All clients are running its own copy of Pegasus Mail 4.01.The  Mail directories for all users are located on our server and can be accessed by the users from all PCs.  Users  have to enter their pegasus user name and their password to receive mails from the POP3-server.

This works fine for years with version 4.01, but upgrading to a  newer version of Pegasus fails:
      After installation of eg. PMAIL 4.6 and input of the network path to the mail directory in the multi-user mode everything looks pretty nice. Users can access their mail directories but the Internet setup informations are lost (email address, POP3 server etc.).  After entering the missing informations in Pegasus 4.6 everything is fine again, until one uses Running sithe old pegasus version 4.01 on another PC.  In this case again all informations given  previously in the internet setup are lost again. for the version 4.01.
 
Does this mean that running Pegasus in mutlti user mode is not possible using different pegasus mail versions?
Do I have to install the new pegasus mail versions on all PCs?

> This works fine for years with version 4.01, but upgrading to a
> newer version of Pegasus fails:
>
>       After installation of eg. PMAIL 4.6 and input of the network path to the mail directory in the multi-user mode everything looks
> pretty nice. Users can access their mail directories but the Internet setup informations are lost (email address, POP3 server
> etc.).  After entering the missing informations in Pegasus 4.6 everything is fine again, until one uses Running sithe old pegasus
> version 4.01 on another PC.  In this case again all informations given  previously in the internet setup are lost again. for the
> version 4.01.

Different versions of the program need to use a different pmail.ini file since the the configuration of the program is different.  You can do this by using the command line options.

-Y <filename>

Specify an alternative name for the Pegasus Mail User Preferences file, PMAIL.INI. This switch tells Pegasus Mail that it should read and save all preferences information in the file you give, which must not have a path associated with it (it must be a simple filename). This is mostly useful if you run Pegasus Mail from two different machine with different screen resolutions, since it allows you to define settings specific to each machine.  

>  
> Does this mean that running Pegasus in mutlti user mode is not possible using different pegasus mail versions?

Sure, just make sure the different versions don't use the same pmail.ini file.

> Do I have to install the new Pegasus mail versions on all PCs?

You at least need to change the shortcut loading the program.  Actually all the remote PC's should be using the same copy of the program downloaded from the server.  This way when you update the program all the systems use the new version of the software.  The basic setup is

1.  Install WinPmail in the multiuser mode on the "server".  Use c:\pmail
    for the program; c:\pmail\mail for the mail directories.

2.  Run PCONFIG.exe from the WinPMail program directory and change the
    HOME and NEW mail directory specification to the
    \\server\vol\pmail\mail\~8 format so that the remote workstations
    look for the mailboxes on the server not their local hard drive.

3.  Go to the remote workstations and install a shortcut to the common
    program.

Ok, now you have the basic mail system setup.  You can send mail to each other using Pegasus Mail.  If all are just POP3 clients this is as far as you go.

4.  Install Mercury/32 on this same server pointing to the Pegasus Mail
    directory structure.  Use MercuryD, MercuryS, MercuryC at least. Use
    \\server\vol\mercury\queue for the mail spool directory.

5.  Point MercuryD at all of your POP3 mailboxes to download the mail to
    your Pegasus Mail user directories.

You now can send and receive Internet mail via Pegasus Mail.  The mail is delivered to the Pegasus Mail directories automatically.  You send mail simply but putting the output files into the Mercury/32 mail spool directory.  This is accomplished automatically with a Pegasus Mail User Defined Gateway.  

6.  If you want to maintain other POP3/IMAP4 clients, point the client at
    the at your Mercury/32 host as a POP3 and SMTP host using the Pegasus
    Mail username and password to pickup the mail.

You can do a complete inbound and outbound mail archive with this setup using a simple Mercury/32 "Always" filter that put a copy in a users mail directory.