[Freeswitch-users] Sendmail segfaulting

Fri Jan 27 10:16:26 MSK 2012

You need

<param name="mailer-app-args" value=""/>

It's the same as the nullmailer case documented in the wiki. Ie, you
need to override the default "-t" setting.

John

On 27/01/12 03:14, Rob Morin wrote:
>
> Okay, this is not expected.
>
>  
>
> I switched over to ssmtp, since from what I can tell, that attaching
> of the voicemail file occurs within Freeswitch.
>
>  
>
> It isn't sending anything, although, again, I can send it from the
> command line.
>
>  
>
> When I run freeswitch from the command line and leave a voicemail, it
> gives the following errors:
>
>  
>
> ssmtp: recipients with -t option not supported
>
> ssmtp: recipients with -t option not supported
>
>  
>
> The only problem is, my switch.conf file looks like this,
>
>  
>
>     <param name="mailer-app" value="/usr/sbin/ssmtp"/>
>
>  
>
>     <param name="dump-cores" value="yes"/>
>
>     <!--RTP port range -->
>
>     <!--<param name="rtp-start-port" value="16384"/>-->
>
>     <!--<param name="rtp-end-port" value="32768"/>-->
>
>  
>
> So, where is it getting the "-t " ???
>
>  
>
> Just to be safe, I removed the <param name="mailer-app-args" value="-t"/> line _and_ rebooted. But it is still there?
>  
> Thank you,
> Rob
>
>  
>
> *From:*John [mailto:freeswitch at earthspike.net]
> *Sent:* Thursday, January 26, 2012 8:41 PM
> *To:* freeswitch-users at lists.freeswitch.org
> *Subject:* Re: [Freeswitch-users] Sendmail segfaulting
>
>  
>
> Rob,
>
> sendmail is running as a service, so the segfault could be being
> thrown by the sendmail service, not necessarily by the
> command-line-app-version that adds mails to the queue (and then
> terminates).  Most mailers work this way: separate processes to add
> the mail to the queue, process the queue, accept connections on
> various sockets.  FreeSWITCH is written to wait until the
> queue-insertion invocation of sendmail is completed. Thankfully, it
> doesn't wait until the message is actually sent on to its next
> location as, in some cases, that could take hours if the remote host
> is down.  In your log below, it looks like sendmail [25200] has
> happily accepted the message from FreeSWITCH and queued it for
> delivery.  sendmail [25207] is the process that has then barfed, after
> the message has been queued, which suggests that it is nothing to do
> with FreeSWITCH itself.  Perhaps there might be a copy of the message
> from the crashing process in the message queues in /var/spool/mail (or
> similar) which you could look at to see if there is anything weird in
> it?  But the bottom line is that it looks like you have  pure sendmail
> problem. Unfortunately, that's where my knowledge stops as I run
> Postfix as my main mailer and ssmtp as a dumb relay.  Maybe someone on
> a CentOS or sendmail list can help you with the sendmail issue?  Or,
> as I mentioned earlier, if you don't need a full mailer, you could
> remove sendmail and install a simpler mailer such as ssmtp (as I see
> you have a relay that needs TLS and for which authentication appears
> to be failing).
>
> John
>
> PS. The parallel test is to wrap the original command in parentheses
> and duplicate it several times on a single command line, each time
> followed by an ampersand to put it into the background, ie:
>
> rmorin at blie-fs$ ( cat ....   | sendmail ......  ... ) & ( cat ..... |
> sendmail .... ) &    .... and so on
>
> [It maybe that your sendmail queues faster than your shell can invoke
> sendmail, so it isn't really in parallel, but then that should be
> similar for FreeSWITCH too, so it would be a 'rapid-fire' test instead
> of a parallel test.]
>
> On 27/01/12 00:46, Rob Morin wrote:
>
> John,
>
>  
>
> Thank you for your help.
>
>  
>
> I ran the command line as you described, and everything worked fine.
>
>  
>
> I should also mention, that some of my extensions do not have the
> notifications turned on. And even for them, getting the message
> through is hit or miss -- sometimes it segfaults, sometimes it
> doesn't. So I don't necessarily think it's a "two message" issue.
> Also, in looking at the logs, sometimes I see the segfault appear in
> the middle of the maillog logging for the other message. So it doesn't
> look like FS is waiting for the sendmail command to return before
> executing the next command.  Here's what I mean...
>
>  
>
> Jan 26 14:28:50 blie-fs sendmail[25200]: q0QESoi9025200:
> Authentication-Warning: blie-fs.blie-ent.com: freeswitch set sender to
> voicemail at blie-ent.com <mailto:voicemail at blie-ent.com> using -f
>
> Jan 26 14:28:50 blie-fs sendmail[25200]: q0QESoi9025200:
> from=voicemail at blie-ent.com <mailto:from=voicemail at blie-ent.com>,
> size=18662, class=0, nrcpts=1,
> msgid=<201201261428.q0QESoi9025200 at blie-fs.blie-ent.com>
> <mailto:201201261428.q0QESoi9025200 at blie-fs.blie-ent.com>,
> relay=freeswitch at localhost
>
> Jan 26 14:28:51 blie-fs sendmail[25201]: q0QESpVj025201:
> from=<voicemail at blie-ent.com> <mailto:voicemail at blie-ent.com>,
> size=19026, class=0, nrcpts=1,
> msgid=<201201261428.q0QESoi9025200 at blie-fs.blie-ent.com>
> <mailto:201201261428.q0QESoi9025200 at blie-fs.blie-ent.com>,
> proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
>
> Jan 26 14:28:51 blie-fs sendmail[25200]: q0QESoi9025200:
> to=rmorin at blie-ent.com <mailto:to=rmorin at blie-ent.com>,
> ctladdr=voicemail at blie-ent.com <mailto:ctladdr=voicemail at blie-ent.com>
> (501/501), delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=48662,
> relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (q0QESpVj025201
> Message accepted for delivery)
>
> Jan 26 14:28:51 blie-fs kernel: [41082.268638] sendmail[25207]:
> segfault at 7fff96dffed8 rip 7f158ee0b7fb rsp 7fff96dffea0 error 6
>
> Jan 26 14:28:51 blie-fs sendmail[25203]: STARTTLS=client,
> relay=smtp.sendgrid.net., version=TLSv1/SSLv3, verify=FAIL,
> cipher=DHE-RSA-AES256-SHA, bits=256/256
>
> Jan 26 14:28:51 blie-fs sendmail[25203]: q0QESpVj025201:
> to=<rmorin at blie-ent.com> <mailto:rmorin at blie-ent.com>, delay=00:00:00,
> xdelay=00:00:00, mailer=relay, pri=139026, relay=smtp.sendgrid.net.
> [174.36.32.204], dsn=2.0.0, stat=Sent (Delivery in progress)
>
>  
>
> On this instance, the notification didn't get through, but the message
> did.
>
>  
>
> All of that said, I'm not sure how to run the 'parallel' test, though.
> (I did run the single test many times in quick succession with no
> failures.)
>
>  
>
> My ulimit --s is set at 8192. And I don't have any other arguments,
> other than '-t'.
>
>  
>
> Thank you,
>
> Rob
>
>  
>
> *From:*John [mailto:freeswitch at earthspike.net]
> *Sent:* Thursday, January 26, 2012 6:23 PM
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] Sendmail segfaulting
>
>  
>
> Rob,
>
> ssmtp sends whatever it's given:  FreeSWITCH puts the message together
> (in src/switch_utils.c:switch_simple_email()) to make a fully
> MIME-compliant message with the attachments read out of their files
> and then pipes it into the 'sendmail' (whether ssmtp, nullmailer,
> sendemail.py or whatever) program for it to send/relay it.  FreeSWITCH
> waits for the 'cat | sendmail' program to return before continuing
> execution and deleting files, so file deletion is unlikely to be the
> issue.  Like you say, it sounds like the problem is not with
> configuration but it's also very unlikely to be with file deletion. 
>
> Can you reproduce the fault by running sendmail from the command line
> with a suitably formatted mail message[*] as input?  This is pretty
> much what FreeSWITCH does:
>
> cat message.txt | <sendmail.app> -f noreply at mydomain.com
> <mailto:noreply at mydomain.com> <mailer-args> recipient at mydomain.com
> <mailto:recipient at mydomain.com>
>
> ... with <..> from what you have in conf/autoload_configs/switch.conf.xml?
>
> [* 'suitably formatted message' could be one of the successful ones,
> view source, then edit to trim off the transport headers]
>
> If that is successful, try to replicate your 2-message-scenario by
> running two of the above commands in parallel with different input
> files and see if that generates a segfault.  [If you are a linux noob
> as well as a FS noob I can spell this out for you.]
>
> John
>
> On 26/01/12 22:04, Rob Morin wrote:
>
> John,
>
>  
>
> That's helpful, but ssmtp doesn't support attachments so it won't
> support sending the voicemail files.
>
>  
>
> Additionally, I'm somewhat stumped on the default 'sendmail' option.
> The references in the Wiki are basically all 'configuration' issues --
> stack size, etc. The problem I have is that it isn't a configuration
> issue -- sometimes it goes through, sometimes it doesn't. If it were a
> configuration issue, it would never go through (unless it was a
> resource that was near its margin).  So that's why I wanted to insert
> a delay. It appears to me that the segfault is being caused by the
> file getting moved, deleted, or still being open when sendmail
> attempts to access it.  I wish I had more to go on though.
>
>  
>
> Thank you,
>
> Rob
>
>  
>
> *From:*John [mailto:freeswitch at earthspike.net]
> *Sent:* Thursday, January 26, 2012 1:49 PM
> *To:* freeswitch-users at lists.freeswitch.org
> <mailto:freeswitch-users at lists.freeswitch.org>
> *Subject:* Re: [Freeswitch-users] Sendmail segfaulting
>
>  
>
> Slightly unrelated, but I have been using the python script
> sendemail.py until recently when a user noticed that they were not
> being emailed some voicemails.  I have since changed to using ssmtp
> (rather than nullmailer as my mail server requires a login, TLS on
> tcp/587). One thing I noticed, and it may be me that caused it, but
> the sendemail.py script had some indentation using (4) spaces and some
> using tabs.  But the main problem is that the script keeps warning
> about the MimeWriter class being deprecated and has no error reporting
> or recovery, it seems.  For me, it was easier to install ssmtp than
> rewrite the python script.  If you don't need a full mail server, I
> would recommend using a null mailer like ssmtp or nullmailer.
>
> John
>
> On 26/01/12 15:13, Rob Morin wrote:
>
> I tried to modify the eximcompat.sh script to work with sendmail. I'm
> not sure why it didn't work. It might be that, for starters, I don't
> have exim installed, I have sendmail.
>
>  
>
> I haven't tried the python script.  Is that the one you use?
>
>  
>
> Rob
>
>  
>
> *From:*Michael Jerris [mailto:mike at jerris.com]
> *Sent:* Thursday, January 26, 2012 8:09 AM
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] Sendmail segfaulting
>
>  
>
> delay won't help you.  Why didn't the script work?  I know we do this
> and it works fine.  Pretty sure we use a modified version of the
> sample in tree.
>
>  
>
> Mike
>
>  
>
> On Jan 25, 2012, at 10:43 PM, Rob Morin wrote:
>
>
>
>
>
>
> I saw that, and tried everything I could. Still no luck.
>
>  
>
> My stack limit is 8192, so that shouldn't be the issue.  I'm running
> CentOS x_64.
>
>  
>
> I tried creating a script as the wiki suggests, so that I could make
> changes without having to restart FS. But that didn't work either (I'm
> still a noob). My goal was to add a sleep delay, in the case that FS
> is calling the sendmail command before it's completely written and
> released the email it's sending. Any idea how to make that work?
>
> Thank you,
>
> Rob
>
>  
>
> *From:* Michael Jerris [mailto:mike at jerris.com]
> <mailto:[mailto:mike at jerris.com]> 
> *Sent:* Wednesday, January 25, 2012 1:57 PM
> *To:* FreeSWITCH Users Help
> *Subject:* Re: [Freeswitch-users] Sendmail segfaulting before second
> message is sent
>
>  
>
> http://wiki.freeswitch.org/wiki/Mod_voicemail#Exim4_settings
>
>  
>
> On Jan 25, 2012, at 1:31 PM, Rob Morin wrote:
>
>
>
>
>
>
>
> For some extensions, I've got FreeSWITCH configured to send both the
> voicemail to an email address and a notification to a cell phone that
> there is a message.
>
>  
>
> Sendmail is segfaulting (error 6) before the second email message is
> sent. Sometimes the notification message is going out, sometimes the
> email message goes.
>
>  
>
> If I am just sending an email, it is **generally** successful.
> Although sometimes it fails, so I really need to fix this.
>
>  
>
> Does anyone have any suggestions as to how I can troubleshoot this? 
>
> (Running CentOS 5.7, sendmail 8.13).
>
>  
>
>
>
>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org <mailto:consulting at freeswitch.org>
> http://www.freeswitchsolutions.com
>  
> 
> 
>  
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>  
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>  
>
>
>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
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> http://www.freeswitchsolutions.com
>  
> 
> 
>  
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>  
> FreeSWITCH-users mailing list
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>  
>
>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org <mailto:consulting at freeswitch.org>
> http://www.freeswitchsolutions.com
>  
> 
> 
>  
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>  
> FreeSWITCH-users mailing list
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>
>  
>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
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