If you control your DNS server setup and such, DKIM and authentication technologies alikes (http://en.wikipedia.org/wiki/DomainKeys) are the way to go.
Also, make sure the reverse DNS lookup is pointing to the right place, i.e. that the SMTP server domain name translates to an IP that translates back to the same domain name when you do a reverse lookup. Since this is really something more of a network arch. setup, you probably will find more answers for that on ServerFault or the likes. MT On Tue, Mar 9, 2010 at 2:18 AM, Ashley Sheridan <a...@ashleysheridan.co.uk>wrote: > On Mon, 2010-03-08 at 17:18 +0000, Richard Quadling wrote: > > > On 8 March 2010 13:06, Teus Benschop <teusjanne...@gmail.com> wrote: > > > On Mon, 2010-03-08 at 10:21 +0000, Richard Quadling wrote: > > >> Contrary to popular belief, to send an email you do not need to have > > >> your own SMTP server. All you need to know is the SMTP server > > >> responsible for your recipients email. > > > [...] > > > > > > While the above is true, there is also another thing that comes into > > > play. We used to send email directly to the receiver the way described > > > above. But at times it happens that the receiving smtp server refuses > to > > > accept mail from the sender since the sender is not known to be a good > > > smtp server, and at times it could get blacklisted. Rules like this get > > > tightened up because of the desire to curb spam at the source. > > > > > > Teus. > > > > > > > > > > > > -- > > > PHP General Mailing List (http://www.php.net/) > > > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > > > > So, say I did go and setup a local SMTP relay, how would I make it > > known that it was a "real" smtp server and not just some script > > pushing spam? > > > > > > > > -- > > ----- > > Richard Quadling > > "Standing on the shoulders of some very clever giants!" > > EE : http://www.experts-exchange.com/M_248814.html > > EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp > > Zend Certified Engineer : > http://zend.com/zce.php?c=ZEND002498&r=213474731 > > ZOPA : http://uk.zopa.com/member/RQuadling > > > > > By having your local relay talk seductively to the remote server? > > More sensibly though, I would assume that you could use some sort of > certificate for this, although I don't know much about mail servers. > > Thanks, > Ash > http://www.ashleysheridan.co.uk > > > -- Marc Trudel-Bélisle www.wizcorp.jp
