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Full Discussion: Sendmail issue
Top Forums UNIX for Advanced & Expert Users Sendmail issue Post 302607450 by Corona688 on Wednesday 14th of March 2012 12:46:36 PM
Old 03-14-2012
A firewall only sees packets -- ports and IP addresses, and perhaps system statistics like who generated the packet. It doesn't genuinely understand the content of the packets, and won't know it was an email destined for x.

Can you show an example of the logs you get? And please explain in more detail what your system is and how your firewall and mail servers are configured.
 

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LEARN ABOUT OPENSOLARIS

from

from(1B)					     SunOS/BSD Compatibility Package Commands						  from(1B)

NAME

       from - display the sender and date of newly-arrived mail messages

SYNOPSIS

       /usr/ucb/from [-s sender] [username]

DESCRIPTION

       The  from utility prints out the mail header lines in your mailbox file to show you who your mail is from. If  username is specified, user-
       name's mailbox is examined instead of your own.

OPTIONS

       The following option is supported:

       -s sender    Only display headers for mail sent by  sender.

USAGE

       See largefile(5) for the description of the behavior of from when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).

FILES

       /var/mail/*

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       biff(1B), mail(1B), attributes(5), largefile(5)

SunOS 5.11							    28 Jan 2004 							  from(1B)
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