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Automaticly Delete E-Mails for non-existant clients [message #65003] Sun, 17 May 2009 00:14 Go to next message
ArcAiN6 is currently offline ArcAiN6  United States
Messages: 113
Registered: July 2008
Valuable Member
Recently, i've noticed quite a large ammount of spam e-mails going to my catchall. Originaly this was set to the postmaster account, but with the recent influx of e-mails to non-existant users, i was wondering if it would at all be possible to simply delete these e-mails instead?

I realize that bouncing is an available option, but i personaly feel this is not the proper approach. Simply bouncing messages only increases the ammount of mail traffic that goes no where, as 99% to all of these messages are not actually from the sender's address, as such, i would rather just delete them as they are recieved, and spare the server load of bouncing them back out.


Thank you in advance Very Happy

ArcAiN6

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Re: Automaticly Delete E-Mails for non-existant clients [message #65099 is a reply to message #65003] Sun, 17 May 2009 21:20 Go to previous messageGo to next message
arthurthornton is currently offline arthurthornton  United States
Messages: 2120
Registered: August 2007
Location: Virginia
Grandmaster
LxCenter Staff
I second this request.

My Site

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Re: Automaticly Delete E-Mails for non-existant clients [message #65131 is a reply to message #65003] Sun, 17 May 2009 22:50 Go to previous messageGo to next message
lxbhargava is currently offline lxbhargava  
Messages: 597
Registered: May 2009
Master

Hello,

If all the mails are going to postmaster you can use Mail account home -> filter config to delete spam mails.

On Sun, May 17, 2009 at 04:14:45AM -0000, Chris wrote:
>
>
> Recently, i've noticed quite a large ammount of spam e-mails going to my catchall. Originaly this was set to the postmaster account, but with the recent influx of e-mails to non-existant users, i was wondering if it would at all be possible to simply delete these e-mails instead?
>
> I realize that bouncing is an available option, but i personaly feel this is not the proper approach. Simply bouncing messages only increases the ammount of mail traffic that goes no where, as 99% to all of these messages are not actually from the sender's address, as such, i would rather just delete them as they are recieved, and spare the server load of bouncing them back out.
>
>
> Thank you in advance :d
>
> ArcAiN6
>




Thanks and Regards

S Bhargava
Lxlabs Support

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Re: Automaticly Delete E-Mails for non-existant clients [message #65133 is a reply to message #65003] Mon, 18 May 2009 01:37 Go to previous messageGo to next message
ArcAiN6 is currently offline ArcAiN6  United States
Messages: 113
Registered: July 2008
Valuable Member
i don't believe this is a viable solution. The issue at hand is massive amounts of spam e-mails are being delivered to non-existent users with a variety of from addresses, and subject / body's.

If it wasn't for the myriad of differences in the mails, a simple spam filter could be done, however, with the variety, it is simply too big of a task to create spam filters for each individual e-mail.

Bouncing the messages more often than not leads to a return bounce. thus doubling and in some cases tripling or more the amount of mail traffic.

To me the simplest solution would simply be to delete the message upon arrival, thus cutting out the bounce traffic.

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Re: Automaticly Delete E-Mails for non-existant clients [message #65526 is a reply to message #65003] Fri, 22 May 2009 00:19 Go to previous messageGo to next message
arthurthornton is currently offline arthurthornton  United States
Messages: 2120
Registered: August 2007
Location: Virginia
Grandmaster
LxCenter Staff

Do you want this feature?[ 4 votes ]
1.yes 4 / 100%
2.no 0 / 0%

I have created a poll to see what the users want.

My Site

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Re: Automaticly Delete E-Mails for non-existant clients [message #65585 is a reply to message #65133] Fri, 22 May 2009 02:57 Go to previous messageGo to next message
lxbhargava is currently offline lxbhargava  
Messages: 597
Registered: May 2009
Master

Hello,

Sorry, I could not understand what is the problem in forwarding it to /dev/null or not maintaining a local copy.

On Mon, May 18, 2009 at 05:37:30AM -0000, Chris wrote:
>
>
> i don't believe this is a viable solution. The issue at hand is massive amounts of spam e-mails are being delivered to non-existent users with a variety of from addresses, and subject / body's.
>
> If it wasn't for the myriad of differences in the mails, a simple spam filter could be done, however, with the variety, it is simply too big of a task to create spam filters for each individual e-mail.
>
> Bouncing the messages more often than not leads to a return bounce. thus doubling and in some cases tripling or more the amount of mail traffic.
>
> To me the simplest solution would simply be to delete the message upon arrival, thus cutting out the bounce traffic.
>




Thanks and Regards

S Bhargava
Lxlabs Support

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Re: Automaticly Delete E-Mails for non-existant clients [message #65652 is a reply to message #65585] Fri, 22 May 2009 12:00 Go to previous messageGo to next message
ArcAiN6 is currently offline ArcAiN6  United States
Messages: 113
Registered: July 2008
Valuable Member
that would be exactly what i'm asking for, a way to delete or just not save the message if it's intended for a non-existant user, but as it is now, i can only bouce the messages, or forward them to another mailbox.

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Re: Automaticly Delete E-Mails for non-existant clients [message #68219 is a reply to message #65652] Mon, 15 June 2009 21:07 Go to previous messageGo to next message
ArcAiN6 is currently offline ArcAiN6  United States
Messages: 113
Registered: July 2008
Valuable Member
[BUMP]

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Re: Automaticly Delete E-Mails for non-existant clients [message #73314 is a reply to message #65003] Thu, 18 March 2010 04:10 Go to previous messageGo to next message
evonet is currently offline evonet  Hungary
Messages: 86
Registered: November 2007
Valuable Member
Hello,

I also need this feature, my VPS gets tons of SPAM nowadays and the replies make huge load.

Thanks
Zsolt

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Re: Automaticly Delete E-Mails for non-existant clients [message #73316 is a reply to message #73314] Thu, 18 March 2010 04:20 Go to previous messageGo to next message
LxCenter_Danny is currently offline LxCenter_Danny  Netherlands
Messages: 2068
Registered: July 2007
Location: Netherlands
Grandmaster
LxCenter Core Team Member
LxCenter Representative
Is it the same as http://project.lxcenter.org/issues/10 that has been fixed?


iig i do see:

CHKUSER rejected rcpt: from <danny@xxx.nl::> remote <ukkie.xxx.nl:xxxx.xs4all.nl:82.95.xxx.xxx> rcpt <somefakeemailhehe@lxcenter.org> : not existing recipient

Which is the correct handling.



LxCenter - System Operations

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Re: Automaticly Delete E-Mails for non-existant clients [message #73317 is a reply to message #65003] Thu, 18 March 2010 04:44 Go to previous messageGo to next message
evonet is currently offline evonet  Hungary
Messages: 86
Registered: November 2007
Valuable Member
Well, now it works like this:

The spammer writes to a non-existing address like fake@domain.com. The server accepts the connection and after completing the process sends a message that the address doesn't exists. So after every try there is a reply.

There are like 5.000 mailer daemon messages in the mail queue which make huge load.

How can i fix this?

The catchall of the domain is set to postmaster. And how can i globally configure the catchall address? I have ~ 80 domains on this VPS.

Thanks

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Re: Automaticly Delete E-Mails for non-existant clients [message #73318 is a reply to message #65003] Thu, 18 March 2010 04:49 Go to previous messageGo to next message
evonet is currently offline evonet  Hungary
Messages: 86
Registered: November 2007
Valuable Member
And is there an option mentioned in the topic title? To delete messages sent to non-existent users.

Thanks

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Re: Automaticly Delete E-Mails for non-existant clients [message #73319 is a reply to message #73317] Thu, 18 March 2010 05:45 Go to previous messageGo to next message
LxCenter_Danny is currently offline LxCenter_Danny  Netherlands
Messages: 2068
Registered: July 2007
Location: Netherlands
Grandmaster
LxCenter Core Team Member
LxCenter Representative
Can you try this if it rejects at smtp level?

http://wiki.qmailtoaster.com/index.php/RBLs

(add the extra DNSBL'S).



LxCenter - System Operations

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Re: Automaticly Delete E-Mails for non-existant clients [message #73320 is a reply to message #65003] Thu, 18 March 2010 05:50 Go to previous messageGo to next message
evonet is currently offline evonet  Hungary
Messages: 86
Registered: November 2007
Valuable Member
I just telnet-ed into the server and it accepts incoming connections even the address doesn't exist.

Looks like i don't have chkusr installed.

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Re: Automaticly Delete E-Mails for non-existant clients [message #73396 is a reply to message #73320] Mon, 22 March 2010 10:59 Go to previous messageGo to next message
evonet is currently offline evonet  Hungary
Messages: 86
Registered: November 2007
Valuable Member
Is there a way to install chkuser2 with a script?


The problem still exists, I have tons of outgoing mails as replies for non-existent users.

Thanks

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Re: Automaticly Delete E-Mails for non-existant clients [message #73434 is a reply to message #73396] Tue, 23 March 2010 20:29 Go to previous message
LxCenter_Danny is currently offline LxCenter_Danny  Netherlands
Messages: 2068
Registered: July 2007
Location: Netherlands
Grandmaster
LxCenter Core Team Member
LxCenter Representative
What is your queue time? you could lower that to a few days or less so not delivered emails are deleted when max queue time is reached.


btw, other mailers does have the same thing. Not only qmail.
I think its also noted in an internet RFC guide (world wide rules that a mail program should work with)

iig if i send a mail to an non-existant address to a random provider, i get a email back that it cant be delivered because there was not such a email box named like that address.
Or is your issue something else?



LxCenter - System Operations

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