[Mimedefang] Stream_by_domain

[Matthew.van.Eerde at hbinc.com]

Matthew van Eerde wrote:
> Kris Deugau wrote:
>> WBrown at e1b.org wrote:
>>> I may be able to get them.  How well does RHEL 3 handle 50 addresses
>>> bound to one NIC?
>> 
>> I should note that this does NOTHING to help or hinder with respect
>> to multi-domain emails;  everything still travels through a single
>> sendmail/mimedefang instance.
> 
> If there's a way to detect what local address the connection is bound
> to, then RCPT TO's can be checked whether the MX for that address
> matches the local address.  
> 
> Mismatch -> REJECT This IP is not an MX for @twenty-three.example.com

Or more simply... without the local address requirement... you could just reject after DATA if @Recipients contains multiple domains.  No legitimate sender would send such an email (unless, perhaps, they're internal, and the server is their smart-host... in which case there should be a way to check for that.)

-- 
Matthew.van.Eerde (at) hbinc.com               805.964.4554 x902
Hispanic Business Inc./HireDiversity.com       Software Engineer