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sendmail users

my sendmail do not need user

   
9:42 pm on Sep 18, 2007 (gmt 0)

10+ Year Member



Hi all,
Iíve decided to recover an old machine of mine into a web server just out of curiosity. It is my first time looking into Linux. It was very hard to understand that arquitecture after a all live of windows but in the last two months Iíve discover so many new possibilities that I regret the fact of not trying it out sooner. So as silly as it may sound a lot of my doubts are simple things that I can not found the answer anywhere.
Strait to the point: Iím using sendmail and the Return-path: daemon@mydomain.net. As far as I know this does not look right. It should be something like my-user@mydomain.net.
The way it is happening it looks available for every spammer. Is my logic correct and if so how can a fix the issue?
2:51 am on Sep 19, 2007 (gmt 0)

10+ Year Member



How are you sending the message? Have a look at the -f option in the sendmail manpage.

Sean

2:11 pm on Sep 19, 2007 (gmt 0)

10+ Year Member



Should have mention in my first post, but the message is from a online form in a user website (test user).
I did had a look into -f option but it doesn't seem right since eventually users would not ad -f in their script when calling the sendmail.
I thought it was permissions issue and uid, gid or sticky option at first but after a zillion try outs with diferent permissions i've put aside that option but i can be wrong, i'm really a newbbie in Linux systems.