What about the situation that many sme users will be in with hosting multiple domains and email for those domains.
Only email sent that comes from the main domain name address will pass the reverse IP lookup test.
It's a badly flawed test and servers & lists shouldn't be using it.
I have been caught by this one too !
Complain as loudly as you can to ISP's and RBL list maintainers.
It took over a year's complaining to my ISP (BT) asking them to fix
the rDNS on my static IP before they finally agreed;~/ When they had
finally done it I managed to persuade (even) fivetensrc to pull the red
flag (dnsstuff.com) seemingly permanently on my address. I notice that
they still have the rest of BT's range red flagged but my entry has a
special classification returned that doesn't cause alarms. Intermittently an
otherwise good RBL service inaccurately/inappropriately re-classifies that
BT range as being all dynamic, whereas it is all static though admittedly
not all rDNS-enabled. A recent example was the nomorefunn RBL service.
Given the above am I heading for trouble
Ray with the dozen or
so domains hosted here? With a rDNS-enabled static IP I have not yet
used BT's own SMTP preferring to 'roll my own' emails with my SME7.
WEBlanceYour text looks very similar to the stuff some of my WordPress blogs
spew up through their contact form plugin mechanisms. A suitable anti
'injection email exploit' mechanism now traps them effectively. Be aware
that you are now likely to be on circulating lists as being 'vulnerable' and
that such exploit attempts will continue albeit (possibly) intermittently.