DNS Problem related to hotmail.com

[Brian Salomaki]

Most likely hotmail is rejecting his mail because in using sendmail from his 
own computer, the reverse is not set up, and hotmail cannot resolve his 
hostname, and therefore rejects his mail as an anti-spam action.  I'm not 
sure that this is the case though, so please reply with specific version 
information, and exact error messages.

On Thursday 20 September 2001 10:05 am, you wrote:
> Hi,
> We are an ISP using BIND8 on solaris8. One of our client is using sendmail
> on linux machine. He set our dns server. All were fine and he had no
> problem in sending any mails with our dns server. But for two weeks, he got
> problem in sending mails to hotmail.com, though our many other clients,
> using mailserver other than sendmail got no problem. But when he sets DNS
> other than us, he can send mail in a anywhere.
> From their end, hotmail mx records came perfect with our dns and he can
> telnet their mailserver on 25 port. I checked all the options and now too
> much fed up.
> Can any GURU solve that problem.
> Thanx in advance.
> Regards,
> Rehan
> http://www.cyber.net.pk

-- 
Brian Salomaki
Gambit Design Internet Services
110 E. State St., Suite 18, Kennett Square, PA 19348