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4.6

Solaris 8 - Configuring sendmail relay (NoAuth inbound -> SSL outbound)

Asked by David_Anderson in SendMail Email Server, Sun Solaris, Simple Mail Transfer Protocol (SMTP)

Tags: Solaris, sendmail, private server

I have been happily chugging away for the past 5 years with my Solaris 8 server on my home network, using sendmail 8.11.7+Sun for a variety of purposes: scraping financial websites and emailing mashups to myself & friends, developing/testing cgi scripts for websites that need to email form data, etc.

Recently my ISP decided that I must use SSL/Auth to send mail through their SMTP server. In addition to breaking my sendmail implementation, it has broken a number of important Wintel utilities, notably my APC Powerchute Business Edition email notifications, my 3ware RAID controller email notifications, and others. I have contacted tech support for each of the products that I'm having this problem with as well as my ISP and the collective response is a shrug of the shoulders.

What this boils down to is, I have two problems I need to solve:

1) I need to get sendmail working again for non-interactive sessions as shown in the perl code snippet attached to this post.
2) Contingent on (1), I would like to be able to use the Solaris box to relay notification emails from the Wintel box. I do not need to have the Solaris box handle all of my outbound mail(e.g. Thunderbird), just the outbound email from applications that do not support SSL/Auth.

Regarding (1), it seems that the obvious starting point would be to yank the Sun sendmail out by the roots and set up sendmail 8.14.3, but from my reading on the subject it seems that I will need to install OpenSSL and possibly BerkelyDB to meet the prerequisites for compiling sendmail with SSL support. Links to details on this would be much appreciated, especially any info pertaining to steps I need to take to pave the way to solving problem (2) above.

Regarding (2), all of the info I've been able to dig up on SMTP/SSL relay configuration assumes that the user wants the client to make an SSL connection to the relay. That's not what I want. What I need is to have my client applications send their mail to the relay on the Solaris box with NO authentication(I suppose I need to set up an SMTP server of some flavor) and have that mail relayed to my ISP's SMTP server using SSL and user/pass authentication (again, this needs to be non-interactive).

Note that security is not the highest priority here; these machines all sit behind a router with built-in firewall/NAT and are essentially invisible to the internet at large(as far as I can tell with grc.com ShieldsUP). So long as it's reasonably secure, that's fine; I don't have to worry about port scans, spammers, etc.

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             #!/usr/bin/perl -T
.
.
.
        open MAIL, "| /usr/lib/sendmail -t -F'$from_name' -f'$from_email'"
                or die "Could not open sendmail: $!";
print MAIL <<END_OF_HEADER;
To: $email
Reply-to: $from_email
Subject: $sub
$type_string
 
END_OF_HEADER
 
        open(FILE, "< ./reports/$rpt_file.$type")
                or die "Couldn't open $rpt_file.$type for reading: $!\n";
 
        while (<FILE>) {
                chomp($_);
                print MAIL "$_\n";
        }
        close(FILE);
        if($type_string) {
                print MAIL end_html();
        }
 
        close MAIL or die "Error closing sendmail: $!";
        print "<li>Sent $sub.</li><br>\n";
}

           
         

Solaris 8 - Configuring sendmail relay (NoAuth inbound -> SSL outbound)

Asked by David_Anderson in SendMail Email Server, Sun Solaris, Simple Mail Transfer Protocol (SMTP)

Tags: Solaris, sendmail, private server

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