pnelson wrote:
> 
> SMTP1 is different.
> 
> What can happen is that because SMTP2 accepts relays from SMTP1 it
> will accept local mail, but SMTP2 will send outbound mail also.
> 
> Steve didn't note the complete configuration, just mailertable.

Now that my blood pressure has returned to normal...

I have been frontending an exchange server using sendmail since 1996 (using
the mailertable). I constantly run open relay checkers against my system
everytime I make even the simplest config change. Adding what I showed in my
post to the mailertable WILL NOT CREATE AN OPEN RELAY. I'm guessing you
added something else to your sendmail config (like an entry to the access
table) to create the problem you describe.

> 
> If I could understand this more I would be much better at explaining
> it, maybe even solving it.  But I found that when I relayed non local
> email to another server, I regularly got a spam relayed out through
> SMTP2. Once I close the relaying and had SMTP2 be the only recipient
> of mail like: 
> 
>   originator -> SMTP2
> 
> the spam relaying stopped
> 
> So here is a description of my setup that had the open relay going:
> 
> System 1
> -name: msvr1
> -accepts email to [EMAIL PROTECTED]
> -relays all mail with domain name thisdomain.com to system 2 using 
> mailertable 
> -main outgoing SMTP server
> 
> System 2
> -name: msvr2
> -accepts email to [EMAIL PROTECTED] and [EMAIL PROTECTED]
> -local outgoing SMTP server

I'm having a hard time following which server your using for outgoing mail.
You have "main outgoing server" and "local outgoing server". Which one is
configured to send outgoing e-mails? If your smart, it will be system 2.
System 1 should only send DSN's and relay only from e-mails submitted
locally (127.0.0.1), which is the default as shipped with redhat.
> 
> Tried to stop it but, in time constraints it was easier to just drop
> System1 and make System 2 the primary. Any ideas what I was doing
> wrong?  I still would like it to work?

Not without seeing your sendmail config files. As I stated earlier, I think
you must have added something to your access file that may be causing your
problem.

Steve Cowles


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