Re: Execute linux commands after receive a mail...
What would be the human reaction to a 15 second latency (nothing to regular e-mail service) on a light switch - hit it again and again until the first message arrives. Fun to imagine lights suddenly turning on and off in rapid succession as delayed e-mail starts to get delivered a few seconds after the initial request. The fridge could e-mail the grocery list when the milk runs low but e-mail not a good fit for most IoT applications. Ron On 17/03/2017 3:18 AM, Sean Greenslade wrote: On Thu, Mar 16, 2017 at 05:48:49PM -0700, li...@lazygranch.com wrote: I had no idea you could receive email on any port. I wonder how many ISPs allow this. Sure, you can run any service on any port. The default ports (e.g. 25 for SMTP) are simply there to make interoperability easy. Most ISPs do nothing to block specific services on specific ports. The only thing I've ever seen is some residential ISPs block all outgoing connections on port 25 to hamstring spambots on infected home PCs. This is typically a blanket port ban, so it doesn't matter if it's a SMTP server on that port or not; nothing goes out port 25. This generally doesn't effect home users, since they almost always use a submission port or a webmail client to get to their mail relay. In any event, would this be THE scheme to use for an IOT application? That is send an email to turn on/off a sprinker, light, etc. The idea being postfix et all does all the security, AKA the hard part. While it would certainly be _A_ way of doing IoT, I certainly wouldn't call it _THE_ way. Email is not particularly well-suited for command and control type applications. Lots of protocol and message overhead, high latency, unidirectional channels...overall not a great fit. --Sean -- Ron Wheeler President Artifact Software Inc email: rwhee...@artifact-software.com skype: ronaldmwheeler phone: 866-970-2435, ext 102
Re: Execute linux commands after receive a mail...
On Thu, Mar 16, 2017 at 05:48:49PM -0700, li...@lazygranch.com wrote: > I had no idea you could receive email on any port. I wonder how many > ISPs allow this. Sure, you can run any service on any port. The default ports (e.g. 25 for SMTP) are simply there to make interoperability easy. Most ISPs do nothing to block specific services on specific ports. The only thing I've ever seen is some residential ISPs block all outgoing connections on port 25 to hamstring spambots on infected home PCs. This is typically a blanket port ban, so it doesn't matter if it's a SMTP server on that port or not; nothing goes out port 25. This generally doesn't effect home users, since they almost always use a submission port or a webmail client to get to their mail relay. > In any event, would this be THE scheme to use for an IOT application? > That is send an email to turn on/off a sprinker, light, etc. The idea > being postfix et all does all the security, AKA the hard part. While it would certainly be _A_ way of doing IoT, I certainly wouldn't call it _THE_ way. Email is not particularly well-suited for command and control type applications. Lots of protocol and message overhead, high latency, unidirectional channels...overall not a great fit. --Sean
Re: Execute linux commands after receive a mail...
On Thu, 16 Mar 2017 11:29:56 -0500 Noel Jones wrote: > On 3/16/2017 11:18 AM, Gilberto Nunes wrote: > > Hello folks... > > > > I just need execute some command after receive a mail... > > > > I found this site: > > > > https://www.thecodingmachine.com/triggering-a-php-script-when-your-postfix-server-receives-a-mail/ > > > > This can be achieve with shell script as well?? > > The above site is an example of a simple content_filter using a PHP > script. The postfix docs contain a similar example using a shell > script. > http://www.postfix.org/FILTER_README.html#simple_filter > > I had no idea you could receive email on any port. I wonder how many ISPs allow this. In any event, would this be THE scheme to use for an IOT application? That is send an email to turn on/off a sprinker, light, etc. The idea being postfix et all does all the security, AKA the hard part.
Re: Execute linux commands after receive a mail...
Thanks a lot Noel It will be useful 2017-03-16 13:29 GMT-03:00 Noel Jones : > On 3/16/2017 11:18 AM, Gilberto Nunes wrote: > > Hello folks... > > > > I just need execute some command after receive a mail... > > > > I found this site: > > > > https://www.thecodingmachine.com/triggering-a-php-script- > when-your-postfix-server-receives-a-mail/ > > > > This can be achieve with shell script as well?? > > The above site is an example of a simple content_filter using a PHP > script. The postfix docs contain a similar example using a shell > script. > http://www.postfix.org/FILTER_README.html#simple_filter > > > -- Obrigado Cordialmente Gilberto Ferreira Consultoria em Servidores e Serviços Linux | Virtualização Proxmox | Zentyal Server | Zimbra Mail Server (47) 3025-5907 (47) 99676-7530 Skype: konnectati www.konnectati.com.br
Re: Execute linux commands after receive a mail...
On 3/16/2017 11:18 AM, Gilberto Nunes wrote: > Hello folks... > > I just need execute some command after receive a mail... > > I found this site: > > https://www.thecodingmachine.com/triggering-a-php-script-when-your-postfix-server-receives-a-mail/ > > This can be achieve with shell script as well?? The above site is an example of a simple content_filter using a PHP script. The postfix docs contain a similar example using a shell script. http://www.postfix.org/FILTER_README.html#simple_filter
Execute linux commands after receive a mail...
Hello folks... I just need execute some command after receive a mail... I found this site: https://www.thecodingmachine.com/triggering-a-php-script-when-your-postfix-server-receives-a-mail/ This can be achieve with shell script as well?? Thanks a lot... -- Obrigado Cordialmente Gilberto Ferreira Consultoria em Servidores e Serviços Linux | Virtualização Proxmox | Zentyal Server | Zimbra Mail Server (47) 3025-5907 (47) 99676-7530 Skype: konnectati www.konnectati.com.br
