You can make your own PTR record if you ask the your ISP for a reverse dns delegation. But it's a long shot if we are only talking about 1 or 2 ip addresses. Normally your ISP will not allow reverse DNS delegation for a very small number of IPs but if you have the right connections and if you are a valued client, they might. Im not too sure about yahoo, but i think your reverse and forward ( PTR & A records) entries should match. That means you ask your isp for a PTR for mail.company.com pointing to your IP, at the same time, on the domain that you manage, add A entry for mail.company.com pointing to your IP. This of course, assumes that you have a static IP.
Note on reverse DNS delegation. If your ISP is giving you reverse dns delegation, you might need to receive the delegation one by one (not for the whole /24 or part of it). So you will have multiple NS entries to receive the delegation. hth On Wed, Jun 10, 2009 at 5:01 PM, jan gestre <[email protected]> wrote: > Only the ISP can make a PTR record for your domain because they own the ip > address, caveat is it takes ages before they accommodate your request. > > On Wed, Jun 10, 2009 at 12:40 PM, Ronald Artos <[email protected]> wrote: > >> Reverse DNS needs some configuration in your ISP right? >> >> Modifying the PTR in their DNS server? >> >> >> >> On Wed, Jun 10, 2009 at 11:27 AM, Kelvin Quee <[email protected]> wrote: >> >>> Hi Ronald, >>> >>> I used to have it for a couple of my servers. >>> >>> I resolved it by making sure of these - >>> >>> 1) Reverse DNS works >>> 2) SPF properly implemented >>> >>> >>> Kelvin Quee >>> +65 9177 3635 >>> >>> >>> >>> On Wed, Jun 10, 2009 at 10:10 AM, Ronald Artos<[email protected]> >>> wrote: >>> > But I think that is not the right way to fix this, Yeah I guess, even >>> we're >>> > using a local mail relay to our web/mail host server, I think I have to >>> > implement DomainKey or SPF or the last shot, have our own STMP server >>> the >>> > let our ISP fix the PTR of our mail own host. >>> > >>> > >>> > >>> > On Tue, Jun 9, 2009 at 8:11 PM, jan gestre <[email protected]> >>> wrote: >>> >> >>> >> Tell Yahoo! that your email is not SPAM by filling an online form, >>> also >>> >> you need to make sure that you have a PTR record for your domain. If >>> Yahoo! >>> >> still treat your email as SPAM despite of the aforementioned, just >>> tell your >>> >> Yahoo! recipients to tag it as not SPAM, Yahoo! in turn will learn. >>> >> HTH >>> >> >>> >> On Tue, Jun 9, 2009 at 9:07 AM, Ronald Artos <[email protected]> >>> wrote: >>> >>> >>> >>> I got this problem recently, and some says I have to configure the >>> SPF >>> >>> and Domainkeys, But to think of it, It was working previously. So Is >>> there >>> >>> guide, howto or any explanation why our Mail Relay Server (In Postfix >>> I've >>> >>> done the relayhost = mail.domain.td and necessary smtp config stuff) >>> act >>> >>> that way? >>> >>> >>> >>> System Specs >>> >>> >>> >>> Centos 5.3 >>> >>> Postfix 2.3 >>> >>> Bind 9.3 >>> >>> openSSL 0.9 >>> >>> >>> >>> _________________________________________________ >>> >>> Philippine Linux Users' Group (PLUG) Mailing List >>> >>> http://lists.linux.org.ph/mailman/listinfo/plug >>> >>> Searchable Archives: http://archives.free.net.ph >>> >> >>> >> >>> >> >>> >> -- >>> >> http://jangestre.wordpress.com >>> >> >>> >> _________________________________________________ >>> >> Philippine Linux Users' Group (PLUG) Mailing List >>> >> http://lists.linux.org.ph/mailman/listinfo/plug >>> >> Searchable Archives: http://archives.free.net.ph >>> > >>> > >>> > _________________________________________________ >>> > Philippine Linux Users' Group (PLUG) Mailing List >>> > http://lists.linux.org.ph/mailman/listinfo/plug >>> > Searchable Archives: http://archives.free.net.ph >>> > >>> _________________________________________________ >>> Philippine Linux Users' Group (PLUG) Mailing List >>> http://lists.linux.org.ph/mailman/listinfo/plug >>> Searchable Archives: http://archives.free.net.ph >>> >> >> >> _________________________________________________ >> Philippine Linux Users' Group (PLUG) Mailing List >> http://lists.linux.org.ph/mailman/listinfo/plug >> Searchable Archives: http://archives.free.net.ph >> > > > > -- > http://jangestre.wordpress.com > > _________________________________________________ > Philippine Linux Users' Group (PLUG) Mailing List > http://lists.linux.org.ph/mailman/listinfo/plug > Searchable Archives: http://archives.free.net.ph >
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