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Application Signature Detail

Security Intelligence Center
Application Signatures
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Short Name

Messaging:Mail:SMTP

Category

Messaging

Release Date

2009/10/19

Update Number

1527

Supported Platforms

idp-4.1+, isg-3.5+, j-series-9.5+, mx-9.4+, srx-9.2+, srx-branch-9.4+

SMTP: Simple Mail Transport Protocol


This signature detects Simple Mail Transfer Protocol (SMTP), which is protocol for e-mail transmission across the Internet. It is an Internet standard host-to-host mail transport protocol. SMTP usually runs on TCP port 25.

References

  • URL: http://en.wikipedia.org/wiki/Smtp
  • URL: http://www.faqs.org/rfcs/rfc1869.html
  • URL: http://www.ietf.org/rfc/rfc2821.txt

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