cannot send mails from internal lan user to external mailboxes

[madouno]

Hi all,

I searched thru FAQs and posts but I'm not be able to find the solution.

I have some workstation into a private lan that send automatic mails (from user@zip.zap.zop.com) to external mailboxes (me@yahoo.com). This lan is connected to external world thru firewall, router etc. and a mailserver.
Now with new antispam policy I cannot send any mail because my workstations are not visible to internet (the mailserver do a reverse DNS or somethig like). The postmaster said me to send mails with the field "Reply-to:" filled with a valid account to solve the problem.

My question is: How can I set this field automatically in the script that send mails? I must change something in sendmail.cf or any other configuration files?

If I do it manually:
telnet hostname 25
mail from:foo@foo.com
rcpt to: myextmail@yahoo.com
data
anyword bla bla bla...
.
quit
than is all OK and the mail is quickly delivered.

Thanks in advance
Domenico

 

[onepair]

I used the /etc/hosts file on my main server to allow all mail comming in from the firewalled domain.

ip.or.router.0 internalservers.domain.name

Worked for me.

You could also pipe the output to a local user with a .forward file set up and you can that there with the -r I think.