At 10/19/2004 10:09 Tuesday, Eric Luo wrote: >Hi all, > >I got over 100 error messages from the log file: > >Oct 19 09:54:03 elistserv sendmail[4471]: [ID 801593 mail.info] >i9G300H8002104: to=<[log in to unmask] >.NET>, delay=3+10:53:41, xdelay=00:00:00, mailer=esmtp, pri=29911175, >relay=listserv.ja.net., dsn=4.0.0, > stat=Deferred: Connection timed out with listserv.ja.net. I did an NSLOOKUP and that does appear to be the hostname for the MX host. PING and TELNET (port 25) both failed. In this case (w/ more research) I don't think the DNS cache is wrong. There could be a route failure or perhaps some ACL filtering. Talk with your ISP to see if they have any insights. /P