Here are the logs from dovecot.log and sieve.log
dovecot.log
dovecot: Dec 27 02:24:04 Info: IMAP(sandeep@mydomain1.com): Quota warning: bytes=49807360 (95%) messages=0 command=/usr/bin/dovecot-quota-warning.sh 95
dovecot: Dec 27 02:24:04 Info: IMAP(sandeep@mydomain1.com): maildir: data=~/mydomain1.com/sandeep-2010.12.27.02.14.35//Maildir/
dovecot: Dec 27 02:24:04 Info: IMAP(sandeep@mydomain1.com): maildir++: root=/email/mydomain1.com/sandeep-2010.12.27.02.14.35//Maildir, index=, control=, inbox=/email/mydomain1.com/sandeep-2010.12.27.02.14.35//Maildir
dovecot: Dec 27 02:24:04 Info: imap-login: Login: user=<sandeep@mydomain1.com>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured
dovecot: Dec 27 02:24:04 Info: IMAP(sandeep@mydomain1.com): Disconnected: Logged out bytes=24/94
sieve.log
deliver(singh@mydomain1.com): Dec 27 02:24:02 Info: cmusieve: /var/vmail/sieve/mydomain1.com/singh/dovecot.sieve doesn't exist
deliver(singh@mydomain1.com): Dec 27 02:24:02 Info: cmusieve: Using sieve path: /var/vmail/sieve/dovecot.sieve
deliver(singh@mydomain1.com): Dec 27 02:24:02 Info: cmusieve: Script not found: /var/vmail/sieve/dovecot.sieve
deliver(sandeep.singh@mydomain2.com): Dec 27 02:24:02 Info: cmusieve: /var/vmail/sieve/mydomain2.com/sandeep.singh/dovecot.sieve doesn't exist
deliver(sandeep.singh@mydomain2.com): Dec 27 02:24:02 Info: cmusieve: Using sieve path: /var/vmail/sieve/dovecot.sieve
deliver(sandeep.singh@mydomain2.com): Dec 27 02:24:02 Info: cmusieve: Script not found: /var/vmail/sieve/dovecot.sieve
deliver(sandeep.singh@mydomain2.com): Dec 27 02:24:02 Info: msgid=<dba66f9bb8cfe10e566cd4fe5205609d@127.0.0.1>: saved mail to INBOX
deliver(singh@mydomain1.com): Dec 27 02:24:02 Info: msgid=<dba66f9bb8cfe10e566cd4fe5205609d@127.0.0.1>: saved mail to INBOX
Thanks,
Sandeep S