[asterisk-biz] How do i enter two different SMTP in Asterisk VoiceMail

[Ken Rice]

Theres a really simple solution for this... Use the external notify option
of asterisk to fire a simple shell script that checks the mailbox number and
then sends the email out appropriately... This will allow you to use smtp
relays that are not listed in DNS or are even publically available


> From: "Brandon B." <brandon at brellsystems.com>
> Reply-To: Commercial and Business-Oriented Asterisk Discussion
> <asterisk-biz at lists.digium.com>
> Date: Tue, 9 Jun 2009 11:35:39 -0600
> To: <trixter at 0xdecafbad.com>, Commercial and Business-Oriented Asterisk
> Discussion <asterisk-biz at lists.digium.com>
> Subject: Re: [asterisk-biz] How do i enter two different SMTP in Asterisk
> VoiceMail
> 
> On Tue, Jun 9, 2009 at 12:50 AM, Trixter aka Bret
> McDanel<trixter at 0xdecafbad.com> wrote:
>> does asterisk do it that way or does it look up the first A record it
>> gets and use that and only that ??  If that is the case, and it does not
>> even support MX records then the correct answer would probably be closer
>> to "asterisk does not do that".
> 
> The Asterisk voicemail application does not route email message, and
> like many other programs that create email messages (logwatch,
> mailman) it passes the emails to a mail submission agent
> (sendmail/exim with the correct command line arguments) and the mail
> submission agent submits them to the locally running smtp server which
> them uses the local configuration or DNS information to route the
> message properly.
> 
> "'asterisk does not do that'" -- are you quoting yourself?
> 
>> I really dont know but if I had to guess I would say that its not using
>> MX records, because it wants a smtp server, and given the way other
>> things in asterisk are done its likely that it does not try a secondary
>> A record if the primary is down.
> 
> I do know, and I'm not guessing that Asterisk is not using MX records.
> Since Asterisk is not a SMTP server it will not try to delivery to
> secondary A records (since there is no such thing) but neither will it
> try to a secondary MX records.
> 
> "given the way other things in asterisk are done its likely that it
> does not try a secondary A record if the primary is down"
> 
> Considering the obvious fact that Asterisk is not a SMTP server and
> that there is no such thing as secondary A records, who are you to
> slam Asterisk like this?
> 
>> You can still trick asterisk by using something similar to
>> ultramonkey.org (although you may not have to go quite as far as
>> ultramonkey would take you) so that asterisk thinks its just connecting
>> to a single host all the time, and if it fails its transparently
>> switched to the backup system.
> 
> Ultramonkey.org? That is absurd. First, because the situation will not
> be improved with a highly reliable SMTP transactions since the
> delivery of Asterisk emails to the SMTP server is naturally to a local
> SMTP server (i.e. not across a network), and secondly, assuming that
> software from ultramonkey.org would help distribute or make more
> reliable outgoing SMTP transactions, the original question stated that
> two email accounts were involved, so it's unlikely that some kind of
> multiple server solution is reasonable.
> 
>> Of course a more elegant solution would be, assuming its not there which
>> is an assumption I did make, to add the functionality to try multiple
>> hosts in order until it gets something resembling a success code (2xx,
>> usually 200), and if it runs out of hosts then queue and schedule an
>> event to try again in some timeout interval until the queue is empty.
>> But hey, for all I know it already does this, I really havent looked and
>> barely read the posts in this thread.
> 
> I am 100% confident sendmail, postfix and exim properly handle SMTP
> delivery issues, so how can you justify calling for functionality
> within Asterisk to do this same task?
> 
> Brandon B.
> 
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