Hi.I attachement a zip file form openerp mail .Zip can't attachement in mail.All of email configuration are ok beacause other fiels and folders are work well.Attachemnt error fonud only zip.Please Help me.

Errors like that..

raise SMTPDataError(code, resp).

SMTPDataError: (552, '5.7.0 This message was blocked because its content presents a potential\n5.7.0 security issue.