Hi! I have installed perdition-mysql on ubuntu from the default ubuntu packages. Configured and loaded a real user account into the mysql database. Here is my /etc/perdition/perdition.cfg: connection_logging debug connection_limit 1200 M /usr/lib/libperditiondb_mysql.so.0 m localhost:3306:dbPerdition:tblPerdition:perdition:password:user:servername:port Other than some ssl errors the perdition processes start fine. ?> telnet www.isurge.com 143 Trying 64.151.83.157... Connected to www.isurge.com. Escape character is '^]'. * OK IMAP4 Ready inbound3 0001deb7 a login jimmy(a)dalliance.com mypassword a NO Could not determine server Trying this on my production system works(it also proxies to the mail node behind our firewall). ?> telnet mail.dwalliance.com 143 Trying 64.151.83.154... Connected to inbound.thejobdomain.com. Escape character is '^]'. * OK [CAPABILITY IMAP4rev1 CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA] Courier-IMAP ready. Copyright 1998-2003 Double Precision, Inc. See COPYING for distribution information. a login jimmy(a)dalliance.com mypassword a OK LOGIN Ok. Here are what I hope are helpful lines from the log file: Aug 11 06:17:34 inbound3 perdition[18736]: Auth: 127.0.0.1->127.0.0.1 user="jimmy(a)dalliance.com" server="(null)" port="143" status="failed: Could not determine server" Aug 11 06:23:56 inbound3 perdition[20487]: Connect: 66.92.29.233->64.151.83.157 Aug 11 06:23:56 inbound3 perdition[20487]: SELF: "* OK IMAP4 Ready inbound3 0001deb7\r\n" Aug 11 06:24:04 inbound3 perdition[20487]: CLIENT: "a login jimmy(a)dalliance.com mypassword\r\n" Aug 11 06:24:04 inbound3 perdition[20487]: username_add_domain: username_add_domain 0 1 0x52b514 Aug 11 06:24:07 inbound3 perdition[20487]: SELF: "a NO Could not determine server\r\n" Aug 11 06:24:07 inbound3 perdition[20487]: Auth: 66.92.29.233->64.151.83.157 user="jimmy(a)dalliance.com" server="(null)" port="143" status="failed: Could not determine server" I guess some more info about our configuration would be helpful. We have a proxy in front of our email servers the mailboxes for each domain are spread across the email servers. Presently a users email client sends their complete email address as their username. Thanks In Advance, Jimmy