Hi, I managed to setup postfix + cyrus with virtual domain support. Everything works besides sending emails to multiple addresses in the same domain. When I send such email it *gets delivered*, but sender recieves bounce with info: The Postfix program <globus@xxxxxxx>: data format error. Command output: : Mailbox does not exist <zork@xxxxxxx>: data format error. Command output: : Mailbox does not exist This is my maillog: Apr 27 13:17:14 black postfix/smtp[19681]: 79932380199A: to=<globus@xxxxxxx>, relay=127.0.0.1[127.0. 0.1], delay=0, status=sent (250 2.6.0 Ok, id=19582-04, from MTA([127.0.0.1]:10025): 250 Ok: queued a s B2014380199C) Apr 27 13:17:14 black postfix/smtp[19681]: 79932380199A: to=<zork@xxxxxxx>, orig_to=<lm@xxxxxxx>, re lay=127.0.0.1[127.0.0.1], delay=0, status=sent (250 2.6.0 Ok, id=19582-04, from MTA([127.0.0.1]:1002 5): 250 Ok: queued as B2014380199C) Apr 27 13:17:14 black postfix/qmgr[3780]: 79932380199A: removed Apr 27 13:17:14 black postfix/pipe[19686]: B2014380199C: to=<globus@xxxxxxx>, relay=cyrus, delay=0, status=bounced (data format error. Command output: : Mailbox does not exist ) Apr 27 13:17:15 black postfix/pipe[19686]: B2014380199C: to=<zork@xxxxxxx>, relay=cyrus, delay=1, st atus=bounced (data format error. Command output: : Mailbox does not exist ) Apr 27 13:17:15 black postfix/cleanup[19680]: 01346380199A: message-id=<20060427111715.01346380199A@ black.zork.pl> It looks like some cyrus bug. Mail alias lm@xxxxxxx is properly rewritten as zork@xxxxxxxx Message is added to cyrus mailbox. Why postfix gets Mailbox does not exits here? It happens only if I send email to two perosons (maybe more). When I sent to one receipent everything works ok. My cyrus config: configdirectory: /var/lib/imap partition-default: /var/spool/imap admins: root allowanonymouslogin: no allowplaintext: 1 sieveuserhomedir: no sievedir: /var/lib/imap/sieve hashimapspool: yes umask: 077 quotawarn: 90 timeout: 30 poptimeout: 10 defaultacl: anyone lrs autocreatequota: 16000 sasl_pwcheck_method: auxprop unixhierarchysep: yes altnamespace: yes defaultdomain: black.zork.pl virtdomains: userid I am using cyrus-imap 2.2.12 Thanks for any info, Łukasz ---- Cyrus Home Page: http://asg.web.cmu.edu/cyrus Cyrus Wiki/FAQ: http://cyruswiki.andrew.cmu.edu List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html