prevent sendmail do DNS lookup

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Problems host name lookup failure sendmail

Hi I have a problem in sendmail Freebsd when sending emails to yahoo as an example, I get: Sep 5 10:05:43 local50 sm-mta: STARTTLS=client, error: connect failed=-1, SSL_error=1, errno=0, retry=-1 Sep 5 10:05:43 local50 sm-mta: STARTTLS=client: 43926:error:1407742E:SSL...

2. What is on Your Mind?

DNS Lookup Tool Using DIG

Hi. Having a bit of quick fun putting some networking tools online. Here is a DNS Lookup tool. It's basically the DIG command line tool wrapped in forum formatting. If you want more features, please post here. I'm doing to make a few more network tools like this and move on to other...

3. Red Hat

DNS reverse lookup issue

Hi guys. Ok so let me lay out my configs. I can do a NSlookup from client to server BUT NOT a reverse lookup. DNS server: Optimus.jaydomain.com IP : 192.168.1.50 DNS Client: Megatron.jaydomain.com IP : 192.168.1.60 On Sever: # cat /etc/named.conf // // named.conf // // Provided...

4. IP Networking

HOWTO: Linux multihomed dns client - reverse lookup

The following thread is closed: 133552-howto-linux-multihomed-dns-client (Sorry I am not allowed to post URLs) Therefore I write this append in an own thread. The HOWTO in the referenced thread helped me a lot and I only want to append how to make reverse lookup working for a local zone: ...

5. IP Networking

lookup ip address, subnet mask, gateway, and dns at same time

Is there a command that can lookup ip address, subnet mask, gateway, and dns all at the same. I know ifconfig can lookup ip address and subnet mask. I know route -n can lookup gateway. Not sure about a dns command. So I hope there is a way to lookup ip address, subnet mask, gateway, and dns all at...

6. Solaris

DNS Lookup failure:

I am facing typical problem with apache as proxy. my solaris box was running with apache1.3, due to security issue i have updated to apache 2.2. I don't have any DNS set up onmy network. I was able to connect to internet apache 1.3 working as proxy server. http and https are working fine. when...

7. Programming

How to set DNS lookup type for getaddrinfo()?

Hi there, I'm trying to do an MX type lookup using getaddrinfo(), but I can't work out how to change the lookup type to MX from the standard A - can anybody tell me how to do this? Thanks very much John G

8. Solaris

Sendmail through DNS?

Hello Guruz, There is a mailserver with IPrange, i could able to resolve it through DNS, nslookup <IP> Its resolving. But not pinging, port 25 is open for mailserver IP. But when i am sending mail, i am geting the below error :( dsn=x.x.x, stat=Host unknown (Name server:...

9. Solaris

Which lookup tool query both hosts and DNS server?

As i understand, host/nslookup/dig only query DNS server to resolve name to ip. ping can query both, but it seems if ping is blocked, ping won't return IP. traceroute can query both, but i am not able to test if traceroute is blocked, What is the result? Neither ping/traceroute is...

10. UNIX for Advanced & Expert Users

[DNS] Reverse Lookup for 2 IP Addresses

Originally I had the server at home and on Comcast so I used dyndns.org for DNS. Once the server got a bit more popular, I leased a server at a colo facility. They set up the server name in their DNS so I didn't really have any reason to manage my own DNS. DynDNS was managing the domains and I...

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