Off-topic: I would send this directly, but it might bounce.
One problem w/ PTR records is they map one-to-one to A records. But many names (both A and CNAME records) map to one PTR. Hence if you support many domains with a single mail server, you can't satisfy the reverse lookup condition. Also, you can't always keep PTRs up to date unless you run the reverse zone for your subnet. Some ISPs will NOT provide classless delegation, so you have to depend on the ISP to maintain your PTRs, leaving you at their mercy -- not a good thing in my opinion. For most of our clients for whom we provide mail, I ask them to use our server for POP, but continue to use their ISP for SMTP. Some though prefer to use our server for both, and the consequence is that AOL just doesn't get messages from them. Of course AOL's hypocracy is the big story, since they and hotmail have been big spam sources. And much spam now flows through open relays, which may still have PTR records that match the A record, so what does that do? Anyway, it's just a rant. I had a server crash on me earlier this year when it got hijaced by a spammer, and I've spent a lot of hours this year fighting off spam. But I still think it's better to allow mail from senders that don't pass the reverse lookup, and instead rely on black hole lists at the server, and some simple filters on the mail readers. Because I don't want to have to tell my clients that we can't receive mail from them. >Hi, > >Sorry you couldn't connect. > >I went to dnsreport.com and your mail server doesn't reverse DNS >(checkout fail in MX section) > >http://www.dnsreport.com/tools/dnsreport.ch?domain=internetcommercesolut >ions.net > >In order to curb spam there is a shift in this, AOL has shifted to this >and those who have mail servers that don't have PTR (reverse DNS) cannot >post to AOL. There are a bunch of companies that are following suit > > >Ben Johansen - http://www.pcforge.com >Authorized Witango Reseller http://www.pcforge.com/WitangoGoodies.htm >Authorized MDaemon Mail Server Reseller >http://www.pcforge.com/AltN.htm > > >-----Original Message----- >From: Fogelson, Steve [mailto:[EMAIL PROTECTED] >Sent: Thursday, June 19, 2003 1:26 PM >To: '[EMAIL PROTECTED]' >Subject: RE: Witango-Talk: including snippets of code > >Ben, > >I have had that trouble in the past as well. You might want to check it >out. >I was going to buy a Witango update from you on the day before the price >increases, but couldn't get through you email server. > >Have made the update since. > >Steve Fogelson > >-----Original Message----- >From: John McGowan [mailto:[EMAIL PROTECTED] >Sent: Thursday, June 19, 2003 3:13 PM >To: [EMAIL PROTECTED] >Subject: Re: Witango-Talk: including snippets of code > > >Ben, > >I tried to send this post to you off the list, but your mail server >doesn't seem to be accepting any thing from my mail server. > >Anyway, see my comments below about nested @includes. > > >Ben Johansen wrote: > >>Off List, >> >>Now, I remember (coffee finally kicked in) >> >>The reason your sub-include of the TML works is because TML is one of >>the extensions setup in the web server to tell the web server that >>Witango is responsible to process this file. >> >> > >No, the @include tag doesn't interact at all with the web server. It >also doesn't care about file extensions. When the app server comes >across an @include, it doesn't care what file extension it is... it >simply includes the file and evaluates any meta code it comes across. > >>In the case where an included HTML file calling a SUB-HTML file this is >>not the case. The SUB would not have its metatags processed >> >> >Yes they are... See the enclosed example... I just tested this out. > >test.taf does an @include of test1.html > >test1.html does an @include of test2.html >test2.html does an @include of test3.html >test3.html executes @currentdate. > > >/John > >________________________________________________________________________ >TO UNSUBSCRIBE: Go to http://www.witango.com/maillist.taf >________________________________________________________________________ >TO UNSUBSCRIBE: Go to http://www.witango.com/maillist.taf > >________________________________________________________________________ >TO UNSUBSCRIBE: Go to http://www.witango.com/maillist.taf > Bill Conlon To the Point 345 California Avenue Suite 2 Palo Alto, CA 94306 office: 650.327.2175 fax: 650.329.8335 mobile: 650.906.9929 e-mail: mailto:[EMAIL PROTECTED] web: http://www.tothept.com ________________________________________________________________________ TO UNSUBSCRIBE: Go to http://www.witango.com/maillist.taf
