Hi to all. I am using courier-imap now and speed has improved. From the links given at this list, i have learned that ximian is developing and testing against courier-imap, so courier-imap might be the "natural" choice. I have deleted some virtual folders, that has helped too. Thank you for your help. Jürgen -- E-Mail : jlueters@intranet-engineering.de Web : http://www.intranet-engineering.de http://www.sv.lueters.de