Re: [qmailtoaster] empf help

2009-09-09 Thread Jake Vickers
Rajesh M wrote: hello friends how to achieve the following using empf i want to prevent misuse of my mail servers by means of masquerading -- ie user authenticates as user @ domain_on_my_server.com plus password but changes the mail from to user @ yahoo.com etc ... i had several incidences of

[qmailtoaster] empf help

2009-09-08 Thread Rajesh M
hello friends how to achieve the following using empf i want to prevent misuse of my mail servers by means of masquerading -- ie user authenticates as user @ domain_on_my_server.com plus password but changes the mail from to user @ yahoo.com etc ... i had several incidences of such a kind of

Re: [qmailtoaster] empf help

2009-09-08 Thread d...@acbsco.com
Rajesh, I don't think empf can help with your issue. empf defines who an authenticated user can send and receive emails to and from. Since the user is authenticating, empf will not help. Are you sure the email is being sent from your server? Can you actually see the email going out through

Re: [qmailtoaster] empf help

2009-09-08 Thread Eric Shubert
Have you changed the password for the compromised user? d...@acbsco.com wrote: Rajesh, I don't think empf can help with your issue. empf defines who an /authenticated/ user can send and receive emails to and from. Since the user is authenticating, empf will not help. Are you sure the email

Re: [qmailtoaster] empf help

2009-09-08 Thread d...@acbsco.com
Eric, I think this is the person you were referring to on the development list regarding the 127. hole. Rajesh, you may want to review Eric's post on the development list with subject squirrelmail, tcp configuration tweaks. If you use spamdyke, this may help. Dave Eric Shubert wrote: Have you

Re: [qmailtoaster] empf help

2009-09-08 Thread Rajesh M
hi yes i am positive that all the spam was sent thru my server. this company has a office server with fetchmail, around 300 users aliased to a catchall account. some spammer hacked into their server, put a script which shot of spam email and landed my server blacklisted by barracudanetworks and

Re: [qmailtoaster] empf help

2009-09-08 Thread Eric Shubert
That sounds pretty nasty. Changing the password and using iptables to block are the only mechanisms I'm aware of in the toaster. Making the 'from' address adhere to certain rules seems reasonable to me. I would think that eMPF would have such a thing, but on first glance I don't see that it