Thanks Jeroen and Noel for suggestions. I will go through postfix url, will update you.
Thanks, Ramesh. --- On Wed, 30/6/10, Jeroen Geilman <jer...@adaptr.nl> wrote: From: Jeroen Geilman <jer...@adaptr.nl> Subject: Re: Subdomain To: postfix-users@postfix.org Date: Wednesday, 30 June, 2010, 2:58 AM On 29-6-2010 16:28, Noel Jones wrote: > On 6/29/2010 2:47 AM, ramesh wrote: >> >> Hi, >> >> I would like to have suggestion, presently we have internet service& >> subdomain from ISP. >> >> Ex: Domain: @providerdomain.com >> Subdomain: @mydomain.providerdomain.com >> >> Email Id: m...@mydomain.providerdomain.com >> >> This ISP charging more internet charges comparing to other ISP's, so i >> wanted to take different ISP services. >> >> I have registered my own domain, so now i wanted to migrate to my domain. >> >> I need suggestions, things to consider while migrating to my domain. >> >> m...@mydomain.providerdomain.com to m...@mydomain.com >> > > The postfix setup depends on how your domain is currently configured. If > your current domain is listed in mydestination, just add the new domain to > mydestination. > > Otherwise, see > http://www.postfix.org/BASIC_CONFIGURATION_README.html > http://www.postfix.org/STANDARD_CONFIGURATION_README.html > http://www.postfix.org/ADDRESS_CLASS_README.html > http://www.postfix.org/DEBUG_README.html#mail > >> this also reduces spam traffic once we switch over to new email id's. > > Maybe temporarily, but don't bet on it long term. > All things being equal, no, having your own domain with a registered MX will not decrease the spam you see; quite the opposite. I recommend you set up proper UCE controls in postfix, optionally adding a content filter such as amavisd-new. Google for "postfix cheatsheet" to find a good description. J.