No other suggestions. If yyy.com.au were AOL, it would be flat-out
rejected. Many other domains do this, too. AOL's just the biggest and most
common. Can other people send to yyyyy.com.au? Then you have a problem.
The most common of which is the one that is exhibited by the machine
mail.pracnet.com.au. If this is the machine in question, you may want to
re-evaluate your understanding.
--
-tom
--------------------------------------------------------------
> My understanding of RDNS is that if an e-mail fails RDNS
> the word "unverified" appears after the IP address on the
> SMTP header. This dosn't stop the message being deliveried
> as is happening in my case.
> Thanks for your input but any other ideas?
> Liam
> >-----Original Message-----
> >You are on a blackhole list, or yyyyy.com.au requires
> reverse lookup of DNS
> >information. If you'd not munged up the domains I
> could've told you which.
> >But assuming that the mail is originating from
> mail.pracnet.com.au, then the
> >problem is that its reverse DNS record actually points to
> a machine named
> >host2.pracnet.com.au. If YYYYwhatever.com.au is using
> RDNS before letting
> >you mail, that's the issue.
> >--
> >-tom
> >----------------------------------------------------------
> ----
> >> Getting the following error sending to one domain:
> >> There was a SMTP communication problem with
> >> the recipient's email server. Please contact your
> system
> >> administrator.
> >> <{myserver name} #5.5.0 smtp;553 sorry, that
> >> domain isn't in my list of allowed rcpthosts (#5.7.1)>
> >> - The above error happens to only one domain and just
> >> started happening in the last few days.
> >> - We use DNS to resolve domain names with no specific
> >> address spaces only * in the smtp connector.
> >> - The Server is Exchange 2000 SP2
> >> - I deny relay through SMTP and have unticked the "allow
> >> all computers..." box in the SMTP properties
> >> - I do not filter on any SMTP connector
> >> Out of ideas
> >> Thanks in advance
> >> Liam
> >.
by