Can't seem to disable STARTTLS in Fedora sendmail

[Rick Stevens]

Adam Lanier wrote:
> On Fri, 30 Jan 2004 11:32:19 -0800 (PST), Wayne Johnson <wdtj at yahoo.com> 
> wrote:
> 
>> We have a new Fedora system that is suppose to send it's mail (using
>> sendmail, no flames PLEASE!), to smtp.comcast.net.  When we attempt to
>> send it from a local account, we get an error back that the user is
>> invalid.  Strange, but it works find for mail being relayed from/for
>> other windows machines.
> 
> [snip]
> 
>> il.mc, etc.), but sendmail continues to attempt TLS.
>>
>> How do I turn TLS off!
> 
> 
> This is probably a question better suited to a sendmail mailing 
> list/newsgroup but...
> 
> The sendmail book lists the following mc file directives that relate to 
> starttls:
> 
> define(`CERT_DIR', `/etc/mail/certs')
> define(`confCACERT_PATH', `CERT_DIR')
> define(`confCACERT', `CERT_DIR`'/cacert.pem')
> define(`confSERVER_CERT', `CERT_DIR`'/client.cert.pem')
> define(`confSERVER_KEY', `CERT_DIR`'/client.key.pem')
> define(`confCLIENT_CERT', `CERT_DIR`'/client.cert.pem')
> define(`confCLIENT_KEY', `CERT_DIR`'/client.key.pem')
> 
> If any of these are in your sendmail.mc, remove them (or rem them out), 
> rebuild the sendmail.cf file (with the command: m4 sendmail.mc > 
> sendmail.cf) and restart sendmail.

Another way is to edit the current sendmail.cf file and make sure
this line is in it and uncommented:

	O TLSSrvOptions=V

This tells sendmail to NOT request the client's certificate.  Note that
this option is not safe and is only present in sendmail V8.12.x.
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-     Is that a buffer overflow or are you just happy to see me?     -
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