Hello All,
I have a customer who uses linux (RH9) and sendmail as outgoing SMTP server.
There is a strange problem. SMTP server delivers e-mails everywhere around the world except the domains in China. Most of times sendmail gives errors that "lookup failed" and returns e-mails after 5 days of trying.
These are domains hosted in China.
Sometimes delivery succeeds when I do: sendmail -v -q
For some domains it states "invalid sender xyz@vsnl.net" and keeps trying for 5days.
I tried with local DNS as well as ISP (iqara) DNS. But problem exists with both.
On Googleing I found someone having same problem way back in 2001 but there was no solution. Also I found there is lots of control by Chinese government.
Is this problem with RH9? or sendmail with RH9? But then why does problem occur only with China?
So please let me know if someone has (had) same problem and solution if it was solved.
Thanks in advance.
Amish.
P.S. OT question: anyone know if iqara provides SMTP server?