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1

I have a local development server (centos) which I develop a number of websites on. Occasionally I need to test email sending scripts.

I want to avoid the development server from sending emails to anyone who doesn't have an email address with a particular domain (ie: jon@mydomain.com, mary@mydomain.com, etc). So, I would like to create a white list or rule on the server which prevents emails being sent to any email address that doesn't match mydomain.com.

I'm currently using PHP's built-in mail() function. But I imagine this is something more on the server level and I would like something that will manage ANY emails sent out from the server from any program/app/script/etc.

I can confirm that PHP is using /usr/sbin/sendmail.sendmail

linux centos php email sendmail

share|improve this question

edited Sep 17 '13 at 12:51

David

asked Sep 17 '13 at 10:55

DavidDavid

2491821

bumped to the homepage by Community♦ 11 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

1

I have a local development server (centos) which I develop a number of websites on. Occasionally I need to test email sending scripts.

I want to avoid the development server from sending emails to anyone who doesn't have an email address with a particular domain (ie: jon@mydomain.com, mary@mydomain.com, etc). So, I would like to create a white list or rule on the server which prevents emails being sent to any email address that doesn't match mydomain.com.

I'm currently using PHP's built-in mail() function. But I imagine this is something more on the server level and I would like something that will manage ANY emails sent out from the server from any program/app/script/etc.

I can confirm that PHP is using /usr/sbin/sendmail.sendmail

linux centos php email sendmail

share|improve this question

edited Sep 17 '13 at 12:51

David

asked Sep 17 '13 at 10:55

DavidDavid

2491821

bumped to the homepage by Community♦ 11 mins ago

This question has answers that may be good or bad; the system has marked it active so that they can be reviewed.

add a comment | 

I have a local development server (centos) which I develop a number of websites on. Occasionally I need to test email sending scripts.

I want to avoid the development server from sending emails to anyone who doesn't have an email address with a particular domain (ie: jon@mydomain.com, mary@mydomain.com, etc). So, I would like to create a white list or rule on the server which prevents emails being sent to any email address that doesn't match mydomain.com.

I'm currently using PHP's built-in mail() function. But I imagine this is something more on the server level and I would like something that will manage ANY emails sent out from the server from any program/app/script/etc.

I can confirm that PHP is using /usr/sbin/sendmail.sendmail

linux centos php email sendmail

share|improve this question

edited Sep 17 '13 at 12:51

David

asked Sep 17 '13 at 10:55

DavidDavid

2491821

share|improve this question

edited Sep 17 '13 at 12:51

David

asked Sep 17 '13 at 10:55

DavidDavid

2491821

share|improve this question

edited Sep 17 '13 at 12:51

David

asked Sep 17 '13 at 10:55

DavidDavid

2491821

asked Sep 17 '13 at 10:55

DavidDavid

2491821

asked Sep 17 '13 at 10:55

DavidDavid

2491821

2 Answers
2

active

oldest

votes

0

PHP mail() function sends messages according to MTA set as sendmail_path value in php.ini, by default, it's set to following:

sendmail_path = /usr/sbin/sendmail -t -i

on some systems it's a symlink to the binary of MTA, in my case it's sendmail-compatible binary of postfix MTA package, in other case it might be sendmail or qmail or whatever you use:

[root@giomacdesk ~]# ll /usr/sbin/sendmail

lrwxrwxrwx. 1 root root 21 ივლ  3 11:33 /usr/sbin/sendmail -> /etc/alternatives/mta

[root@giomacdesk ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 ივლ  3 11:33 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

So, according to this you can:

A. change sendmail_path to your custom script, write parser and filter messages accordingly. This will affect only outgoing messages sent via PHP mail() where sendmail_path was changed.

B. change configuration of mail server - this will affect all messages sent via MTA of your server, to do this you must check what is your server and configure it accordingly

In case of postfix:

1. add following to the /etc/postfix/main.cf: transport_maps = hash:/etc/postfix/transport_maps



2. 
   

   create file /etc/postfix/transport_maps with following content:

   
   
   

   
   

    alloweddomain.com :
   
    * discard:
   
   

   
   

   
   



3. hash: run postmap /etc/postfix/transport_maps




4. restart postfix

share|improve this answer

edited Sep 17 '13 at 12:46

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I can confirm that it's /usr/sbin/sendmail.sendmail
  
  – David
  Sep 17 '13 at 12:52
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd make life easier - install postfix, remove sendmail, enable postfix: yum install postfix -y;yum remove sendmail;chkconfig postfix on;service postfix start
  
  – GioMac
  Sep 17 '13 at 12:55
  

  
  
  
  

add a comment | 

0

here is how I managed to do it. In Sendmail, you need to modify the mailertable. Add the following:

alloweddomainname.com   alloweddomainname.com

.   error:

This will essentially send any emails to @alloweddomainname.com and error for anything else.

share|improve this answer

answered Sep 17 '13 at 13:47

DavidDavid

2491821

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered using "catchall" local mailbox in default mailertable route? . local:catchall
  
  – AnFi
  Sep 17 '13 at 14:27
  

  
  
  
  

add a comment | 

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0

PHP mail() function sends messages according to MTA set as sendmail_path value in php.ini, by default, it's set to following:

sendmail_path = /usr/sbin/sendmail -t -i

on some systems it's a symlink to the binary of MTA, in my case it's sendmail-compatible binary of postfix MTA package, in other case it might be sendmail or qmail or whatever you use:

[root@giomacdesk ~]# ll /usr/sbin/sendmail

lrwxrwxrwx. 1 root root 21 ივლ  3 11:33 /usr/sbin/sendmail -> /etc/alternatives/mta

[root@giomacdesk ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 ივლ  3 11:33 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

So, according to this you can:

A. change sendmail_path to your custom script, write parser and filter messages accordingly. This will affect only outgoing messages sent via PHP mail() where sendmail_path was changed.

B. change configuration of mail server - this will affect all messages sent via MTA of your server, to do this you must check what is your server and configure it accordingly

In case of postfix:

1. add following to the /etc/postfix/main.cf: transport_maps = hash:/etc/postfix/transport_maps



2. 
   

   create file /etc/postfix/transport_maps with following content:

   
   
   

   
   

    alloweddomain.com :
   
    * discard:
   
   

   
   

   
   



3. hash: run postmap /etc/postfix/transport_maps




4. restart postfix

share|improve this answer

edited Sep 17 '13 at 12:46

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I can confirm that it's /usr/sbin/sendmail.sendmail
  
  – David
  Sep 17 '13 at 12:52
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd make life easier - install postfix, remove sendmail, enable postfix: yum install postfix -y;yum remove sendmail;chkconfig postfix on;service postfix start
  
  – GioMac
  Sep 17 '13 at 12:55
  

  
  
  
  

add a comment | 

0

PHP mail() function sends messages according to MTA set as sendmail_path value in php.ini, by default, it's set to following:

sendmail_path = /usr/sbin/sendmail -t -i

on some systems it's a symlink to the binary of MTA, in my case it's sendmail-compatible binary of postfix MTA package, in other case it might be sendmail or qmail or whatever you use:

[root@giomacdesk ~]# ll /usr/sbin/sendmail

lrwxrwxrwx. 1 root root 21 ივლ  3 11:33 /usr/sbin/sendmail -> /etc/alternatives/mta

[root@giomacdesk ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 ივლ  3 11:33 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

So, according to this you can:

A. change sendmail_path to your custom script, write parser and filter messages accordingly. This will affect only outgoing messages sent via PHP mail() where sendmail_path was changed.

B. change configuration of mail server - this will affect all messages sent via MTA of your server, to do this you must check what is your server and configure it accordingly

In case of postfix:

1. add following to the /etc/postfix/main.cf: transport_maps = hash:/etc/postfix/transport_maps



2. 
   

   create file /etc/postfix/transport_maps with following content:

   
   
   

   
   

    alloweddomain.com :
   
    * discard:
   
   

   
   

   
   



3. hash: run postmap /etc/postfix/transport_maps




4. restart postfix

share|improve this answer

edited Sep 17 '13 at 12:46

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I can confirm that it's /usr/sbin/sendmail.sendmail
  
  – David
  Sep 17 '13 at 12:52
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I'd make life easier - install postfix, remove sendmail, enable postfix: yum install postfix -y;yum remove sendmail;chkconfig postfix on;service postfix start
  
  – GioMac
  Sep 17 '13 at 12:55
  

  
  
  
  

add a comment | 

PHP mail() function sends messages according to MTA set as sendmail_path value in php.ini, by default, it's set to following:

sendmail_path = /usr/sbin/sendmail -t -i

on some systems it's a symlink to the binary of MTA, in my case it's sendmail-compatible binary of postfix MTA package, in other case it might be sendmail or qmail or whatever you use:

[root@giomacdesk ~]# ll /usr/sbin/sendmail

lrwxrwxrwx. 1 root root 21 ივლ  3 11:33 /usr/sbin/sendmail -> /etc/alternatives/mta

[root@giomacdesk ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 ივლ  3 11:33 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

So, according to this you can:

A. change sendmail_path to your custom script, write parser and filter messages accordingly. This will affect only outgoing messages sent via PHP mail() where sendmail_path was changed.

B. change configuration of mail server - this will affect all messages sent via MTA of your server, to do this you must check what is your server and configure it accordingly

In case of postfix:

1. add following to the /etc/postfix/main.cf: transport_maps = hash:/etc/postfix/transport_maps



2. 
   

   create file /etc/postfix/transport_maps with following content:

   
   
   

   
   

    alloweddomain.com :
   
    * discard:
   
   

   
   

   
   



3. hash: run postmap /etc/postfix/transport_maps




4. restart postfix

share|improve this answer

edited Sep 17 '13 at 12:46

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

sendmail_path = /usr/sbin/sendmail -t -i

[root@giomacdesk ~]# ll /usr/sbin/sendmail

lrwxrwxrwx. 1 root root 21 ივლ  3 11:33 /usr/sbin/sendmail -> /etc/alternatives/mta

[root@giomacdesk ~]# ll /etc/alternatives/mta

lrwxrwxrwx. 1 root root 26 ივლ  3 11:33 /etc/alternatives/mta -> /usr/sbin/sendmail.postfix

share|improve this answer

edited Sep 17 '13 at 12:46

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

answered Sep 17 '13 at 12:37

GioMacGioMac

4,02921634

0

here is how I managed to do it. In Sendmail, you need to modify the mailertable. Add the following:

alloweddomainname.com   alloweddomainname.com

.   error:

This will essentially send any emails to @alloweddomainname.com and error for anything else.

share|improve this answer

answered Sep 17 '13 at 13:47

DavidDavid

2491821

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered using "catchall" local mailbox in default mailertable route? . local:catchall
  
  – AnFi
  Sep 17 '13 at 14:27
  

  
  
  
  

add a comment | 

0

here is how I managed to do it. In Sendmail, you need to modify the mailertable. Add the following:

alloweddomainname.com   alloweddomainname.com

.   error:

This will essentially send any emails to @alloweddomainname.com and error for anything else.

share|improve this answer

answered Sep 17 '13 at 13:47

DavidDavid

2491821

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you considered using "catchall" local mailbox in default mailertable route? . local:catchall
  
  – AnFi
  Sep 17 '13 at 14:27
  

  
  
  
  

add a comment | 

here is how I managed to do it. In Sendmail, you need to modify the mailertable. Add the following:

alloweddomainname.com   alloweddomainname.com

.   error:

This will essentially send any emails to @alloweddomainname.com and error for anything else.

share|improve this answer

answered Sep 17 '13 at 13:47

DavidDavid

2491821

alloweddomainname.com   alloweddomainname.com

.   error:

share|improve this answer

answered Sep 17 '13 at 13:47

DavidDavid

2491821

answered Sep 17 '13 at 13:47

DavidDavid

2491821

answered Sep 17 '13 at 13:47

DavidDavid

2491821