Hello, I think I have install cyrus-imapd-2.0.12 successfully. I can deliver email and retrieve email from an imap clients very well. My problem is when a message is delivered to an non-existant user, deliver ( lmtp) always returns "data format error". In looking at the deliver.c, the last txn return value tested is PERMFAIL and the return is EC_DATAFAIL. I'm not a programmer, but I't looks like the return failure codes are mixed up somewhere. My setup is redhat 7.0 with the latest updates, PostFix-20010204, Cyrus-imap-2.0.12. All file systems are reiserfs with the /var/spool/imap on a SoftwareRaid configuration. I am migrating from a redhat6.0, imap-1.6.24 and with the /var/spool/imap on a SoftwareRaid. Have I missed something...