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Linux and email.

Posted on 2006-11-27
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Last Modified: 2010-04-20
I have a default debian installation. I can send mail using the "mail email@email.com" command. The problem is that any major email company will mark it as spam. The email's address shows up as "root@". I know this is probably because I don't have a hostname or something of that effect set. I have a domain, and mail.freepalaces.com points to my IP address that is running the mail server, so how can I send emails so they can correctly bypass the spam filter?
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Question by:CurlyFri3s21
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8 Comments
 
LVL 14

Expert Comment

by:ygoutham
ID: 18018347
edit your /etc/mail/sendmail.mc

change line "dnl # define(`SMART_HOST', `smtp.your.provider') dnl"
to read something like

define(`SMART_HOST', `1.2.3.4') dnl

you can use your mail server ip instead of "1.2.3.4".  this would make it look like mail appearing out of mail.freepalaces.com



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Expert Comment

by:ygoutham
ID: 18018351
you would need to do the following after you edit the lines

make
m4 sendmail.mc > sendmail.cf
service sendmail restart
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Expert Comment

by:rid
ID: 18021520
Might be a good idea to configure your mail to show a proper user instead of "root". My guess is that some spam filters react to a generic username like that. In addition to previous suggestion, of course.
/RID
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Author Comment

by:CurlyFri3s21
ID: 18022051
Okay, I am running into troubles, first off I think you assumed I had sendmail installed, but instead I had mutt or something. Anyways I installed sendmail but it first gave em some kind of error saying I needed to report it or something. I then did apt-get install sendmail-bin and it installed, then I did apt-get install sendmail and it installed, I went to the /etc/mail/sendmail.mc and I changed it from


FEATURE(`msp', `[127.0.0.1', `MSA')dnl
to
FEATURE(`msp', `[smtpout.secureserver.net]', `MSA')dnl

This is the smtp server that godaddy said I can use. as stated by this: "Your outgoing mail server will be "smtpout.secureserver.net" I also had to set a username and password to it, but no where did I find a place to put the username in password.

None the less I did make it and m4 sendmail.mc > sendmail.cf,

I dont have service commands but I used /etc/init.d/sendmail restart.

I then tried mail -s "testsubject" paroxsitic@gmail.com </dev/null  and it basically froze on me, Putty wouldnt cancel with CTRL C or q or anything.

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LVL 14

Expert Comment

by:ygoutham
ID: 18025477
it is not a feature that you need to change, but a definition of the smtp that needs change.  what distro are you using? sendmail version?  more info pls...
0
 

Author Comment

by:CurlyFri3s21
ID: 18025563
As stated eariler, I am using debian 3.1 and sendmail version: 8.13.4

I dont really care if I have a correct domain or not, All i want to do is send non-spam emails
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Accepted Solution

by:
ygoutham earned 2000 total points
ID: 18025780
then try the feature(masquerade_domain) and feature(masquerade_entire_envelope) which should be available at the end of sendmail.mc and change them to make it look like your domain and try resending mails.

most of the mail servers (atleast popular ones like yahoo and google) accept mails from ip addresses as long as they find a reverse dns entry for that number, even if there is a masquerade in place.  i have sent numerous mails as root to myself on these accounts from unregistered domains.  i only get away with a warning but never got marked as spam.  ensure that you are not on the open relay mode and someone else might be doing the good deed of spamming from your ip where it gets listed in

spamcop.org

the above list is read by all popular mail hosting guys and they can mark you off as spam.
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Author Comment

by:CurlyFri3s21
ID: 18031417
Thanks, I got it working for mail.freepalaces.com, which goes back to my IP and marks as not spam.
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