Hi, Somehow my sendmail SMART_HOST stops working now,
- It was working fine, and I didn't change any sendmail configurations. - Test sending mails through my ISP's SMTP sever using Thunderbird proved to be working fine. The, /var/log/mail.log says, DSN: User unknown: $ grep 14778 /var/log/mail.log Mar 16 21:12:56 helios sendmail[14778]: gethostbyaddr(192.168.0.104) failed: 1 Mar 16 21:12:56 helios sendmail[14778]: n2H1CuXA014778: from=a...@isp.net, size=15, class=0, nrcpts=1, msgid=<200903170112.n2h1cuxa014...@helios.selfip.org>, relay=r...@localhost Mar 16 21:12:56 helios sendmail[14778]: n2H1CuXA014778: to=u...@external.com, ctladdr=a...@isp.net (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30015, relay=mailrouter1.isp.net. [199.166.6.105], dsn=5.1.1, stat=User unknown Mar 16 21:12:56 helios sendmail[14778]: n2H1CuXA014778: n2H1CuXB014778: DSN: User unknown Mar 16 21:12:57 helios sendmail[14778]: n2H1CuXB014778: to=a...@isp.net, delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=30000, relay=mailrouter1.isp.net. [199.166.6.105], dsn=2.0.0, stat=Sent (OK id=1LjNrT-0005d1-L4) The actual session that sendmail relayed messages through smart_host: % (echo subject: test; echo) | sendmail -Am -v -f a...@isp.net u...@external.com u...@external.com... Connecting to mailrouter1.isp.net. via relay... 220 mailrouter4.execulink.net ESMTP Exim 4.43 Mon, 16 Mar 2009 21:12:55 -0400 >>> EHLO helios.selfip.org 250-mailrouter4.execulink.net Hello node-13261.pppoe.isp.net [216.75.189.214] 250-SIZE 20971520 250-PIPELINING 250-AUTH PLAIN LOGIN 250 HELP >>> MAIL From:<a...@isp.net> SIZE=15 auth=a...@isp.net 250 OK >>> RCPT To:<u...@external.com> >>> DATA 550 relay not permitted 503 valid RCPT command must precede DATA >>> RSET 250 Reset OK >>> RSET 250 Reset OK a...@isp.net... Using cached ESMTP connection to mailrouter1.isp.net. via relay... >>> MAIL From:<> 250 OK >>> RCPT To:<a...@isp.net> >>> DATA 250 Accepted 354 Enter message, ending with "." on a line by itself >>> . 250 OK id=1LjNrT-0005d1-L4 a...@isp.net... Sent (OK id=1LjNrT-0005d1-L4) Closing connection to mailrouter1.isp.net. >>> QUIT 221 mailrouter4.execulink.net closing connection Anyone has any idea what could be wrong? (I'm using Debian Lenny) Thanks a lot! -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org