How to configure sendmail to use Exchange 2000 without any relays?

[Randy Hagedorn]

Hi all,

Recently we upgraded to Exchange 2000 and are having problems with internal email. Those going outside the company are OK. It seems that Exchange does not like sendmail using a relay for internal mail, due to security issues from internet malicous users.

How would a person be able to configure HP-UX sendmail to use Exchange? Would the HP-UX system need to be changed to use DNS (BIND) so that it becomes part of the same domain as the Exchange server? I know this is a loaded question, how is that done?

Any insights are appreciated.

Randy

[SureshKumar_2 · Accepted solution]

Hi Randy

1) If u have already configured DNS in windows server, the same service can be utilised in HPUX. It is not required to change DNS into HPUX.

Configuring DNS:
*) /etc/nsswitch.conf -> make dns as first and files as next.
*) /etc/resolv.conf -> server

Testing DNS:
*) nslookup

2) If u want to use, as local user (the users in sendmail)
Create an Address - as new Internet mail address, and give full address as email @.

3) The following links will help u, further more:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=187026
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=539369

All the best

[Florian Heigl (new acc)]

You could use the Exchange Server as a 'Smart Host' in Your sendmail configuration.
Also, it is possible for the Exchange Administrator to enable relaying for Your UNIX servers based on ip adresses or hostnames.