asked on

Masquerade Sender - SendMail

Hello.

I have a server running sendmail, just for some application-generated mail, NOT AUTHENTICATED.

What I need is to masquerade ALL messages to have the same sender address (like no-reply@xxx.com), despite of the original sender.

What is the easiest way to accomplish this?

gheist

What are you trying to accomplish?
Most anti-spam systems will reject mail from mailbox that does not accept one.

jar3817

sender mapping is what the generics table was created for. Put entries like this in your /etc/mail/genericstable file:

nobody: noreply@yourdomain.com
apache: noreply@yourdomain.com
oracle: noreply@yourdomain.com
yougetthepicture: something@yourdomain.com

Makes sure sendmail is set to use it, this should be in your sendmail.mc:

FEATURE(`genericstable')dnl

Create the generics database:
# makemap hash /etc/mail/genericstable < /etc/mail/genericstable

Recreate the sendmail config (if you changed the mc file) and restart sendmail

cinglez

ASKER

I don't have any genericstable file in /etc/mail. Should I create one?

In your examples, if an email has the sender oracle@yourdomain.com, it will be remapped to noreply@yourdomain.com?

Sorry, I don't have any experience on this. How should I recreate sendmail.mc?

Thanks

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jar3817

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See answer

cinglez

ASKER

I will try it

cinglez

ASKER

Well, something did not work.

I created the genericstable file with:

orcamento@xxx.com.br: no-reply@xxx.com.br

Then I issued the command:

# makemap hash /etc/mail/genericstable < /etc/mail/genericstable

Then added on sendmail.mc:

FEATURE(`genericstable`)dnl

Then

# m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf

And got:

NONE:0: m4: ERROR: end of file in argument list

jar3817

Can you post your /etc/mail/sendmail.mc file?