StopIT - Message Traffic Management




WHAT StopIT® DOES
HOW StopIT® WORKS WHERE TO GET StopIT®
DOWNLOADS

StopIT® for MIMEsweeper for SMTPTM allows you to smooth out peaks in mail traffic volume and to protect internal mail systems from volume based denial of service attacks.

What StopIT TM does



StopIT® gives you all the benefits of MIMEsweeper for SMTP but with:
  • Improved Traffic Volume Management by providing filtering based on volume and message numbers transmitted in nominated time intervals.

  • Increased Resilience by providing management of incorrectly constructed SMTP transmissions.

  • Better Security by removing relay headers added by MIMEsweeper for SMTP and other servers as messages pass through the mail system.

StopIT® can operate in Monitor Only mode.
Let StopIT® monitor the traffic through your MIMEsweeper SMTP gateway to establish accurate representative maxima for normal message volume and numbers for all sending users and domains. Then use this information to protect your site from abnormal traffic patterns.

Possible uses of StopIT® are when:
  • Your mail system users create very high volumes of low priority mail by mailing large messages to large mailing lists. StopIT® can identify unusual volume patterns, tag messages for parking by MIMEsweeper for SMTP, and for release by MIMEsweeper for SMTP at off peak times.

  • You want a report of the typical maximum volume or number of messages sent by a user or from a domain in a specified period of time (e.g. minute, hour, day).

  • Worm virus infection at one of your business partner's sites results in large numbers of infected messages hitting your site, constituting an attempted denial of service attack.

  • Your system suffers from mail loops as might occur if "out of office attendants" get chatting, or an internal recipient is automatically forwarding messages to an external account that fills up and generates error messages which are then sent back to the internal recipient.

  • You wish to conceal the content scanning mechanisms used on your outgoing e-mail, as well as the internal route that the mail has travelled to reach the intended recipients.

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How StopIT TM works



StopIT® examines every mail message received by MIMEsweeper for SMTP to determine the size and the address of origin. If a message conforms to the StopIT® volume rules, then it is allowed to pass on for content checking by MIMEsweeper for SMTP.

StopIT® allows you to set the maximum volume (in Mbytes) and maximum number of messages sent from an origin (a specific user or domain) in a nominated time period. This is known as a StopIT® threshold for that origin. A specific user's number of messages and traffic volume can be included or excluded from the accumulated domain totals.

An example of a StopIT® threshold is as follows: first.last@domain.com can send a maximum of 100 messages, totalling no more than 50 Mbytes per 60 minutes and include in domain total.

When a StopIT® threshold is exceeded, a single inform message is sent to the system administrator advising which threshold has been exceeded. Messages from the origin can be tagged and processed using standard MIMEsweeper for SMTP functions or can be detained.

StopIT® continues to monitor message traffic and offers two options for action when volume drops below an exceeded threshold. It can allow mail from the origin to flow again without StopIT® tagging or detaining it or it can keep blocking mail until an administrator intervenes.

StopIT® is quite different to MIMEsweeper for SMTP's Park facility in two important respects; it operates on messages received over a period of time rather than on an individual message, and, it operates on message numbers not just size. Combine StopIT® with MIMEsweeper for SMTP's Park facility to get better control.

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Where to get StopIT TM



Demark, Sweden & Norway
Dubex A/S
Gyngemose Parkvej 50
DK-2860 Soeborg
Copenhagen
Tlf: +45 3283 0430
E-Mail: info@dubex.dk
Web: www.dubex.dk


Germany
Kontaktinformationen
NetCon Unternehmensberatung
Telephon +49 (0)2571-57 11 50
Fax: +49 (0)2571-57 11 52
E-Mail: info@netcon-consulting.com
Web: www.netcon-consulting.com
North America
Ensured Security
4300 Number 5 Road, Richmond,
BC V6X 2V3, CANADA
Phone: +1 (778) 855 2546
E-Mail: sales@ensuredsecurity.com
Web: www.ensuredsecurity.com



All Other Locations
SSS - IT Security Specialists
Telephone +64 4 917-6670
e-mail: info@sss.co.nz
web: www.sss.co.nz

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StopIT TM Downloads




StopIT - PDF Data Sheet

PDF Data Sheet (205kb)

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View the complete
SSS IT Module Range

SecureIT®
S/MIME
Gateway

ReleaseIT®
Quarantine
Area
Management



LDAPtIT®
LDAP
Interoperability

StopIT®
Message
Traffic
Management



RecallIT®
Message
Retrieval

StripIT®
Active Code
Removal




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