On Thu, 2006-07-13 at 12:22 +0530, Amish Mehta wrote:
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.
The NS machines must be down/unreachable or the NS entries @ the Domain registrar may not be up to date. Have you tried to resolve MX record manually?
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 know you are using sendmail but ... Are you trying to send the messages directly from your own SMTP server i.s.o. of the ISP's SMTP relay (smart host)? If so, the receiving MTAs may be configured to reject messages from IPs that do not match with vsnl.net's SMTP host(s).
but there was no solution. Also I found there is lots of control by Chinese government.
Very likely, this is the problem.
Is this problem with RH9? or sendmail with RH9? But then why does problem occur only with China?
I don't think so. Otherwise, you would have not been able to exchange messages with domains elsewhere in the world.
P.S. OT question: anyone know if iqara provides SMTP server?
Yes. Pls. look thru their website or call their CC.
-- Arun Khan (knura at yahoo dot com) Chisolm's First Corollary to Murphy's Second Law: When things just can't possibly get any worse, they will.