On 11/20/2010 12:22 PM, Dossy Shiobara wrote:
> OK, I think I figured out the issue!
>
> Similarly, I did a ton of Googling with very little success in finding a
> solution.  Hopefully this will be in the archive and help someone down
> the line ...
>
> My setup is a hand-rolled Qmail + Spamdyke setup.  I run everything
> under Daemontools.  My Spamdyke config lives in /etc/qmail -- here is
> where it gets interesting.
>
> I had regular SMTP and SMTPS managed separately under Daemontools.  The
> SMTP one pointed Spamdyke at /etc/qmail/spamdyke, and the SMTPS one used
> /etc/qmail/spamdyke-ssl.  The two configs were identical *except* the
> SMTPS one had the following three lines at the top:
>
> tls-level=smtps
> tls-certificate-file=/etc/ssl/certs/dovecot.pem
> tls-privatekey-file=/etc/ssl/private/dovecot.pem
>
> This worked great, except making config changes meant having to make
> them *twice* ... annoying, and potentially error prone.  I decided to
> try and unify things into one config file, so I moved the tls-*-file
> config directives into /etc/qmail/spamdyke, and added
> "--tls-level=smtps" to the Daemontools "run" file.
>
> The default for "tls-level" is "smtp" ... which, when I misread (or
> misremembered) the documentation, I confused it for what is actually the
> "none" setting.  I didn't realize that "smtp" would be SMTP+STARTTLS ...
> turns out if you specify tls-certificate-file and tls-privatekey-file
> and tls-level=smtp, you get STARTTLS ... oops.  This is why after moving
> those two config settings into my /etc/qmail/spamdyke (which my SMTP
> config would now share), I ran into problems.  Why?
>
> Here's the relevant snippet of what my SMTP "run" file used to be --
>
> exec envuidgid qmaild \
>      tcpserver -v -R -c "$MAXSMTPD" -u "$QMAILDUID" -g "$NOFILESGID" \
>          -x /etc/tcprules/smtprules.cdb 0 25 \
>      /usr/bin/fixcrio /usr/bin/recordio \
>      /var/qmail/bin/spamdyke -f /var/qmail/control/spamdyke -- \
>      /var/qmail/bin/qmail-smtpd `hostname` \
>      /usr/bin/checkpassword /bin/true 2>&1
>
> At first glance, I totally didn't spot the problem.  Of course, it was
> because I had *assumed* that the default tls-level of "smtp" meant what
> "none" actually provides (NB: it'd be nice if the default for tls-level
> was actually "none" and not "smtp" ... but, that's just my $0.02) -- so,
> why would I be seeing SSL errors, right?  Then it dawned on me that if
> I'm seeing SSL errors, then it MUST be trying to do SSL somehow, despite
> what I (incorrectly) thought tls-level=smtp was supposed to do.
>
> That's when it dawned on me: the fixcrio/recordio is going to much with
> the bytestream, which it's supposed to do and works well for qmail-smtpd
> ... but I had them *upstream* from Spamdyke!  OOPS.
>
> I moved those two commands on the one line to *after* spamdyke, and
> everything appears to be working just fine.  Alternatively, I guess I
> could have left things the way they were and set tls-level=none, so that
> I could use recordio to capture SMTP sessions *before* spamdyke hands
> control over like I had previously.
>
> Perhaps I should put keep recordio before spamdyke, and fixcrio to after
> it.  In theory, that would provide me the logging I want but not muck
> with the potential SSL session.
>
> Thoughts?

Why do you need recordio when spamdyke has such a nice detailed logging 
facility?

Doesn't spamdyke take care of what fixcrio does, making fixcrio unnecessary?

> On 11/20/10 2:01 PM, Sam Clippinger wrote:
>> After doing some Googling, two thoughts occur to me.  First, is it
>> possible you have a firewall or some kind of filtering appliance that is
>> blocking the SSL traffic?  Second, are you using "ulimit" (or something
>> similar) to restrict spamdyke's memory usage?  If that limit is set too
>> low, it can cause strange problems like this.
>


-- 
-Eric 'shubes'

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