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@blie-ent.com using -f Jan 26 14:28:50 blie-fs sendmail[25200]: q0QESoi9025200: from=voicemail@blie-ent.com, size=18662, class=0, nrcpts=1, msgid=<201201261428.q0QESoi9025200@blie-fs.blie-ent.com>, relay=freeswitch@localhost Jan 26 14:28:51 blie-fs sendmail[25201]: q0QESpVj025201: from=<voicemail@blie-ent.com>, size=19026, class=0, nrcpts=1, msgid=<201201261428.q0QESoi9025200@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@blie-ent.com, ctladdr=voicemail@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@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@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@mydomain.com <mailer-args> recipient@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@earthspike.net] Sent: Thursday, January 26, 2012 1:49 PM To: freeswitch-users@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@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@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@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org