The mailing list for listmasters using Sympa

[address@concealed]

Hi,

I am working for a company that runs Sympa 5.3.4 on a (virtual) Debian 5 
server. Sympa was installed by hand. I would like to upgrade both the 
operating system (to Debian 7) and Sympa, preferably using the Debian 
package.

Having read the "Upgrading Sympa" instructions on sympa.org, this is 
what I did so far:

- Installed a new (virtual) Debian 7 server
- Installed Sympa 6.1.11 (Debian package)
- Fixed /etc/sympa/sympa.conf
- Imported a MySQL dump from the old installation
- Copied these directories:
  /var/spool/sympa/wwsarchive -> /var/lib/sympa/wwsarchive
  /var/spool/sympa/wwsbounce -> /var/spool/sympa/wwsbounce
  /var/spool/sympa/expl -> /var/lib/sympa/list_data
- Ran the upgrade command:
  /usr/lib/sympa/bin/sympa.pl --upgrade --from=5.3.4 --to=6.1.11
- Made md5 hashes of the crypt passwords:
  /usr/lib/sympa/bin/sympa.pl --md5_encode_password

So far, so good. But now I can't log with an existing user account. For 
example, trying to log in with our listmaster account returns this error:

ERROR () - Provided password is incorrect

And this shows up in /var/log/sympa.log:

Mar 25 10:42:43 lists wwsympa[3066]: info [robot 
lists.**************.nl] [session 86668152911343] [client 192.168.1.64] 
main::do_login() do_login(listmaster@**************.nl)
Mar 25 10:42:43 lists wwsympa[3066]: info [robot 
lists.**************.nl] [session 86668152911343] [client 192.168.1.64] 
main::do_login() do_login(listmaster@**************.nl)
Mar 25 10:42:43 lists wwsympa[3066]: err Auth::authentication() 
authentication: incorrect password for user listmaster@**************.nl
Mar 25 10:42:43 lists wwsympa[3066]: err Auth::authentication() 
authentication: incorrect password for user listmaster@**************.nl
Mar 25 10:42:43 lists wwsympa[3066]: notice main::do_login() 
Authentication failed
Mar 25 10:42:43 lists wwsympa[3066]: notice main::do_login() 
Authentication failed
Mar 25 10:42:43 lists wwsympa[3066]: info [robot 
lists.**************.nl] [session 86668152911343] [client 192.168.1.64] 
main::do_renewpasswd() do_renewpasswd(listmaster@**************.nl)
Mar 25 10:42:43 lists wwsympa[3066]: info [robot 
lists.**************.nl] [session 86668152911343] [client 192.168.1.64] 
main::do_renewpasswd() do_renewpasswd(listmaster@**************.nl)

However, when I register a new email address I can log in perfectly. The 
password hashes in the database are of the same type (md5, it seems).

Do you have any idea what I am missing here?

Thanks,

Maarten