problems sending mail with attachments

    use dovecot on debian 8


    I'm having problems when trying to send attachments either from webmail or thunderbird have any ideas?


    Code
    1. Jul 8 16:34:19 panel dovecot: pop3(info@nubeshop.com): Disconnected: Logged out top=0/0, retr=0/0, del=0/284, size=28195571
    2. Jul 8 16:34:27 panel postfix/smtpd[30479]: warning: database /etc/aliases.db is older than source file /etc/aliases
    3. Jul 8 16:34:27 panel postfix/smtpd[30479]: connect from panel.nubeshop.net.local[127.0.0.1]
    4. Jul 8 16:34:27 panel postfix/smtpd[30479]: 50EE551C1CAD: client=panel.nubeshop.net.local[127.0.0.1], sasl_method=DIGEST-MD5, sasl_username=info@informaticapuente.com
    5. Jul 8 16:34:27 panel postfix/cleanup[29882]: 50EE551C1CAD: message-id=<255b849edc07cb7b78c97edfc8252660@informaticapuente.com>
    6. Jul 8 16:34:34 panel clamav-milter[4823]: clamfi_eom: FD send failed: Broken pipe
    7. Jul 8 16:34:34 panel clamav-milter[4823]: FD send failed
    8. Jul 8 16:34:34 panel postfix/cleanup[29882]: 50EE551C1CAD: milter-reject: END-OF-MESSAGE from panel.nubeshop.net.local[127.0.0.1]: 4.7.1 Service unavailable - try again later; from=<info@informaticapuente.com> to=<piradoxlanieve@hotmail.com> proto=ESMTP helo=<panel.nubeshop.net>
    9. Jul 8 16:34:34 panel postfix/smtpd[30479]: disconnect from panel.nubeshop.net.local[127.0.0.1]