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Top Forums UNIX for Dummies Questions & Answers Activity Tracing - Using sendmail. Post 302422793 by abvh on Wednesday 19th of May 2010 11:55:55 AM
Old 05-19-2010
Error Activity Tracing - Using sendmail.

Code:
uname -a output
Linux server.domain.com 2.6.9-67.0.15.ELsmp #1 SMP Tue Apr 22 13:50:33 EDT 2008 i686 i686 i386 GNU/Linux

At our company, we have hundreds of employees that access this server for reporting purposes.

However, someone was familiar enough with sendmail and used it to send an email that was crafted to look like it came from a specific person and was sent to the entire company with private information. Huge security concern.

I have been tasked with helping figure out this spoof. Here is what I need to figure out.

The mail was sent at 11:12PM on May 17th.

I need to find the IP address of the system that made a shell/terminal connection to the server around this time and used the sendmail command to send an email to a specific mailing list.

Any ideas ? I'm not entirely familiar with logging yet. The mail log file doesn't seem to provide much useful information.

Last edited by Yogesh Sawant; 05-24-2010 at 03:20 AM.. Reason: added code tags
 

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CALIBRE-SMTP(1) 						      calibre							   CALIBRE-SMTP(1)

NAME
calibre-smtp - part of calibre SYNOPSIS
calibre-smtp [options] [from to text] DESCRIPTION
Send mail using the SMTP protocol. calibre-smtp has two modes of operation. In the compose mode you specify from to and text and these are used to build and send an email message. In the filter mode, calibre-smtp reads a complete email message from STDIN and sends it. text is the body of the email message. If text is not specified, a complete email message is read from STDIN. from is the email address of the sender and to is the email address of the recipient. When a complete email is read from STDIN, from and to are only used in the SMTP negotiation, the message headers are not modified. Whenever you pass arguments to calibre-smtp that have spaces in them, enclose the arguments in quotation marks. OPTIONS
--version show program's version number and exit -h, --help show this help message and exit -l, --localhost Host name of localhost. Used when connecting to SMTP server. -o, --outbox Path to maildir folder to store failed email messages in. -f, --fork Fork and deliver message in background. If you use this option, you should also use --outbox to handle delivery failures. -t, --timeout Timeout for connection -v, --verbose Be more verbose COMPOSE MAIL Options to compose an email. Ignored if text is not specified -a, --attachment File to attach to the email -s, --subject Subject of the email SMTP RELAY Options to use an SMTP relay server to send mail. calibre will try to send the email directly unless --relay is specified. -r, --relay An SMTP relay server to use to send mail. --port Port to connect to on relay server. Default is to use 465 if encryption method is SSL and 25 otherwise. -u, --username Username for relay -p, --password Password for relay -e, --encryption-method Encryption method to use when connecting to relay. Choices are TLS and SSL. Default is TLS. SEE ALSO
The User Manual is available at http://calibre-ebook.com/user_manual Created by Kovid Goyal <kovid@kovidgoyal.net> calibre-smtp (calibre 0.6.53) July 2010 CALIBRE-SMTP(1)
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