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Full Discussion: Sendmail Issue.
Operating Systems Linux Red Hat Sendmail Issue. Post 302443425 by Hari_Ganesh on Sunday 8th of August 2010 11:35:30 PM
Old 08-09-2010
Gurus

I have neither of these configured(Reverse DNS and SMART_HOST)...Infact the machine i am working on is a standalone server not in any domain.

Suppose that i configure both,will smtp-gmail start accepting my mails? If so what is the security that smtp-gmail server has against spammers.How exactly are the smtp servers protected against spammers if all it requires is a SMART_HOST and reverse DNS lookup.

Am asking this to understand the E-Mail setup. I read in howstuffworks.com and got a little understanding...But this thing perplexes me..


Thanks
HG
 

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LEARN ABOUT CENTOS

ipa-dns-install

ipa-dns-install(1)						 IPA Manual Pages						ipa-dns-install(1)

NAME

       ipa-dns-install - Add DNS as a service to an IPA server

SYNOPSIS

       ipa-dns-install [OPTION]...

DESCRIPTION

       Adds DNS as an IPA-managed service. This requires that the IPA server is already installed and configured.

OPTIONS

       -p DM_PASSWORD, --ds-password=DM_PASSWORD
	      The password to be used by the Directory Server for the Directory Manager user

       -d, --debug
	      Enable debug logging when more verbose output is needed

       --ip-address=IP_ADDRESS
	      The IP address of the IPA server. If not provided then this is determined based on the hostname of the server.

       --forwarder=FORWARDER
	      A  forwarder  is a DNS server where queries for a specific non-resolvable address can be directed. To define multiple forwarders use
	      multiple instances of --forwarder

       --no-forwarders
	      Do not add any DNS forwarders, send non-resolvable addresses to the DNS root servers.

       --reverse-zone=REVERSE_ZONE
	      The reverse DNS zone to use

       --no-reverse
	      Do not create new reverse DNS zone. If used on a replica and a reverse DNS zone already exists for the subnet, it will be used.

       --zonemgr
	      The e-mail address of the DNS zone manager. Defaults to hostmaster@DOMAIN

       -U, --unattended
	      An unattended installation that will never prompt for user input

EXIT STATUS

       0 if the installation was successful

       1 if an error occurred

IPA
								   Jun 28, 2012 						ipa-dns-install(1)
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