auto reply table can not be created

> EXECUTE:
> 
> CREATE TABLE dbmail_auto_replies (
>         user_idnr bigint(20) UNSIGNED DEFAULT '0' NOT NULL,
>         start_date DATETIME NOT NULL,
>         stop_date DATETIME NOT NULL,
>         reply_body MEDIUMTEXT,
>         INDEX user_idnr_index (user_idnr),
>         FOREIGN KEY user_idnr_fk (user_idnr)
>                 REFERENCES dbmail_users (user_idnr) ON DELETE CASCADE ON
> UPDATE CASCADE
> ) ENGINE InnoDB DEFAULT CHARSET=utf8;
> 
> 
> 
> RESULT:
> 
> Failed to execute SQL : SQL CREATE TABLE dbmail_auto_replies ( user_idnr
> bigint(20) UNSIGNED DEFAULT '0' NOT NULL, start_date DATETIME NOT NULL,
> stop_date DATETIME NOT NULL, reply_body MEDIUMTEXT, INDEX
> user_idnr_index (user_idnr), FOREIGN KEY user_idnr_fk (user_idnr)
> REFERENCES dbmail_users (user_idnr) ON DELETE CASCADE ON UPDATE CASCADE
> ) ENGINE InnoDB DEFAULT CHARSET=utf8; failed : Can't create table
> `dbmail`.`dbmail_auto_replies` (errno: 121 "Duplicate key on write or
> update")
> 
> TABLES CREATED:
>  	dbmail_acl 	Table (InnoDB) 	0 	13
> 	dbmail_aliases 	Table (InnoDB) 	10 	4
> 	dbmail_authlog 	Table (InnoDB) 	0 	12
> 	dbmail_auto_notifications 	Table (InnoDB) 	0 	2
> 	dbmail_envelope 	Table (InnoDB) 	0 	3
> 	dbmail_filters 	Table (InnoDB) 	0 	5
> 	dbmail_header 	Table (InnoDB) 	0 	3
> 	dbmail_headername 	Table (InnoDB) 	0 	2
> 	dbmail_headervalue 	Table (InnoDB) 	0 	5
> 	dbmail_keywords 	Table (InnoDB) 	0 	2
> 	dbmail_mailboxes 	Table (InnoDB) 	1 	13
> 	dbmail_messages 	Table (InnoDB) 	0 	12
> 	dbmail_mimeparts 	Table (InnoDB) 	0 	4
> 	dbmail_partlists 	Table (InnoDB) 	0 	6
> 	dbmail_pbsp 	Table (InnoDB) 	0 	3
> 	dbmail_physmessage 	Table (InnoDB) 	0 	4
> 	dbmail_referencesfield 	Table (InnoDB) 	0 	3
> 	dbmail_replycache 	Table (InnoDB) 	0 	4
> 	dbmail_sievescripts 	Table (InnoDB) 	0 	4
> 	dbmail_subscription 	Table (InnoDB) 	0 	2
> 	dbmail_upgrade_steps 	Table (InnoDB) 	4 	3
> 	dbmail_usermap 	Table (InnoDB) 	0 	4
> 	dbmail_users 	Table (InnoDB) 	4 	13
> 	user_id_index 	Index 	Index 	2
> 	mailbox_id_index 	Index 	Index 	2
> 	alias_index 	Index 	Index 	1
> 	client_idnr_index 	Index 	Index 	1
> 	user_idnr_index 	Index 	Index 	1
> 	physmessage_id_1 	Index 	Index 	1
> 	physmessage_id_2 	Index 	Index 	2
> 	user_id 	Index 	Index 	1
> 	physmessage_id 	Index 	Index 	4
> 	headername_id 	Index 	Index 	1
> 	headervalue_id 	Index 	Index 	1
> 	physmessage_id_headername_id 	Index 	Index 	2
> 	
>     	Name    	Type    	Rows    	Fields   
> 	physmessage_id_headervalue_id 	Index 	Index 	2
> 	headername_id_headervalue_id 	Index 	Index 	2
> 	headername 	Index 	Index 	1
> 	hash 	Index 	Index 	2
> 	headervalue 	Index 	Index 	1
> 	sortfield 	Index 	Index 	1
> 	datefield 	Index 	Index 	1
> 	owner_idnr_name_index 	Index 	Index 	2
> 	name_index 	Index 	Index 	1
> 	owner_idnr_index 	Index 	Index 	1
> 	seq_index 	Index 	Index 	1
> 	physmessage_id_index 	Index 	Index 	1
> 	mailbox_idnr_index 	Index 	Index 	1
> 	seen_flag_index 	Index 	Index 	1
> 	unique_id_index 	Index 	Index 	1
> 	status_index 	Index 	Index 	1
> 	mailbox_status 	Index 	Index 	2
> 	dbmail_messages_seq_index 	Index 	Index 	1
> 	message_parts 	Index 	Index 	4
> 	part_id 	Index 	Index 	1
> 	ipnumber_index 	Index 	Index 	1
> 	since_index 	Index 	Index 	1
> 	replycache_1 	Index 	Index 	3
> 	owner_idnr_2 	Index 	Index 	2
> 	name 	Index 	Index 	1
> 	owner_idnr 	Index 	Index 	1
> 	from_version 	Index 	Index 	2
> 	usermap_idx_1 	Index 	Index 	3
> 	userid_index 	Index 	Index 	1
> 	dbmail_ccfield 	View 	
> 	
> 	dbmail_datefield 	View 	
> 	
> 	dbmail_fromfield 	View 	
> 	
> 	dbmail_subjectfield 	View 	
> 	
> 	dbmail_tofield 	View 	
> 	
> 
> 
>