sendmail configuration

[Tendai Mataranyika]

I have configured sendmail with RedHat9 but can only send to users within my domain tendai.co.zw but it cannot send to someone within a different domain e.g someone@zabg.co.zw. If i try to send, an error message is send to my outlook which says "Cannot resolve PTR record for 10.114.39.56". The ip address is for the client machine from which iam trying to send from

[Thayanidhi]

Hi,
In general you have set relaying in the mail server(exchange or notes etc). Relay from your server (linux) has to be accepted by mail server.
Are you using DNS to resolve outside domains? If not disable the DNS.

check DS entry in sendmail.cf

Post this question in Linux forum, there could be some specific issue.

Regds
TT

[Bejoy C Alias]

Which version of sendmail u r using ? , the default one came with RH9 ? .
When u send a mail to an outside domain the mail server will check whether the client from where u send outside mail is allowed to relay through ur server, for that it will try to find the name of ur machine from the ip address ( reverse dns ) , here it fails . U can add ur clients ip address to the access database of sendmail to allow relaying like.
1.2.3.4 RELAY
This will allow relaying from the ip 1.2.3.4