SMTP Tweak in whm/ tweak security

**10101** · 09-19-2003 07:23 AM

what is this option and what effect does it have if enabled?

Another example of cpanel releasing a new feature but no information about it

cPanel.net Support Ticket Number: What is it?

**Juanra** · 09-19-2003 07:35 AM

Change your browser colors, you'll see it's explained there:

This SMTP tweak will prevent users from bypassing the mail server to send mail (This is a common practice used by spammers). It will only allow the MTA (mail transport agent), mailman, and root to connect to remote SMTP servers.

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**lowspeed** · 09-19-2003 10:15 AM

how come i dont see this option ?

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**10101** · 09-19-2003 12:34 PM

Originally posted by lowspeed
how come i dont see this option ?

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It's on cpanel v8

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**10101** · 09-19-2003 12:36 PM

Originally posted by Juanra
Change your browser colors, you'll see it's explained there:

This SMTP tweak will prevent users from bypassing the mail server to send mail (This is a common practice used by spammers). It will only allow the MTA (mail transport agent), mailman, and root to connect to remote SMTP servers.

cPanel.net Support Ticket Number:

I saw the text in whm but what exactly does it mean and what effect will it have on customers?

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**Arthur** · 09-20-2003 12:20 AM

pine can't work with the option.

**lowspeed** · 09-20-2003 01:00 AM

How does someone get cpanel 8?

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**casey** · 09-20-2003 02:38 AM

If you have a separate global squirrelmail install, it will stop working....

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**10101** · 09-20-2003 02:41 AM

Originally posted by lowspeed
How does someone get cpanel 8?

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Make sure you have your upgrade uption set to release and in ssh run

/scripts/upcp

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**Juanra** · 09-20-2003 04:41 AM

Originally posted by casey
If you have a separate global squirrelmail install, it will stop working....

I think you can configure it so it will use /usr/sbin/sendmail (i.e., Exim) to send mail.

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**casey** · 09-20-2003 06:44 AM

Originally posted by Juanra
I think you can configure it so it will use /usr/sbin/sendmail (i.e., Exim) to send mail.

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Really? Let me check that out....

<edit>
Yep. Worked like a charm. If I use this setting, will there be tons of complaints from legitimate customers?

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**JPmorgan** · 09-20-2003 05:35 PM

I want to know as well. I would also like to know what changes it makes to the system.

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**Tos** · 09-21-2003 12:35 AM

It appears it puts iptables rules in place to check the sending processes owner.

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**lowspeed** · 09-21-2003 12:37 AM

Would this prevent scripts like phpbb and others from sending out emails ?

Originally posted by Tos
It appears it puts iptables rules in place to check the sending processes owner.

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**Arthur** · 09-21-2003 01:01 AM

Originally posted by lowspeed
Would this prevent scripts like phpbb and others from sending out emails ?

Yes if you configure them to send mail via smtp. Nobody can make smtp connections except for root.

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