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01-15-2003, 12:26 AM
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#1
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LQ Newbie
Registered: Jan 2003
Location: India
Distribution: Red Hat
Posts: 3
Rep:
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Email spamming prevention
I am having a bastion server and a mail server inside in my private network. Then MX points to the bastion server and the bastion forwards all mails to the mailer server in the intranet.
I want to set up aliases in my mail server which sends mails to a group of members. This is required as an internal requirement. How can I prevent outsiders sending mails to these distribution lists ? can I stop outsiders spamming these aliase addresses ?
Thanks
Sree
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01-15-2003, 02:05 AM
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#2
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Member
Registered: Dec 2002
Location: In front of a computer
Distribution: UPS, DHL, FedEx
Posts: 466
Rep:
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what mail server program are you using?
if your mailer uses procmail to deliver it's mail locally you can do that.
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01-15-2003, 01:23 PM
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#3
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LQ Newbie
Registered: Jan 2003
Location: India
Distribution: Red Hat
Posts: 3
Original Poster
Rep:
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I am using sendmail..
Sree
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01-15-2003, 08:49 PM
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#4
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Member
Registered: Dec 2002
Location: In front of a computer
Distribution: UPS, DHL, FedEx
Posts: 466
Rep:
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instead of adding an alias, setup a normal account and in the normal account, add a .procmailrc file...
:0
* ^(from .*(mydomain\.com)
! user1,user2,user3
:0 E
! null
replace user1,user2,user3 with whatever users are in that group.
replace mydomain.com with your domain
and "null" is some address you want the rejected emails to go to.
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01-16-2003, 09:54 AM
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#5
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Moderator
Registered: May 2001
Posts: 29,415
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How can I prevent outsiders sending mails to these distribution lists ? can I stop outsiders spamming these aliase addresses ?
First of all, who do you define as "insiders"?
Until you reply, here's some anti spam|relay reference lists: 1, 2, 3, 4, 5, relay check.
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