Simon_T

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I completly messed up my sendmail config, so I removed it completly and reinstalled.

Now when I follow some instructions from
thescripts_com/serveradministration/webservers/apache/virtual-hosting/app/sendmail_without_webmin.html

I`m told that the first thing to do is "get all the DNS issues straight" then it goes on to say that I need to "add the hostname and IP address for the new e-mail server to your DNS server" and then use "nslookup -sil mymailservername"

I don`t have any experience with setting DNS on Linux so can anyone explain how i can add the correct dns records to internally resolve mylocalmailserver.mylocaldomain into its ip address 192.168.0.20 and also I think I need the reverse DNS setup aswel.


The whole purpose of all this is to set up a local mailserver that downloads all our accounts from our webhost and then we connect to our local mailserver and check emails.

Hope someone can help,

Simon

Simon_T

I`ve got part of the solution, my firewall, (different pc) was serving the dns so first i had to change the dns resolution in /etc/resolv.conf to nameserver 192.168.0.20 and now i get a different error, this time its "** server can`t find mymailservername: SERVFAIL

Any ideas about this?

Thanks

Simon

jackyr

The Internet Protocol (IP) is a protocol used for communicating data across a

packet-switched internetwork using the Internet Protocol Suite, also referred to as TCP/IP.

IP is the primary protocol in the Internet Layer of the Internet Protocol Suite and has the

task of delivering distinguished protocol datagrams (packets) from the source host to the

destination host solely based on their addresses. For this purpose the Internet Protocol

defines addressing methods and structures for datagram encapsulation. The first major

version of addressing structure, now referred to as Internet Protocol Version 4 (IPv4) is

still the dominant protocol of the Internet, although the successor, Internet Protocol the futher details about the IP can be get through by http://www.ip-details.com/
Version 6 (IPv6) is being deployed actively worldwide.Data from an upper layer protocol is encapsulated as packets/datagrams (the terms are basically synonymous in IP). Circuit setup is not needed before a host may send packets to another host that it has previously not communicated with (a characteristic of packet-switched networks), thus IP is a connectionless protocol. This is in contrast to public switched telephone networks that require the setup of a circuit for each phone call (connection-oriented protocol).