lingu wrote: Hi lingu, Thanks for your reply. > Check the below things on your server. > > 1) diskspace df -h shows 253GB free on the LVM which holds mail > > 2) mailq mailq says 'mailqueue is empty' > > 3) netstat -ntlp |grep :25 |grep tcp # netstat -ntlp|grep :25|grep tcp tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 12861/sendmail: acc > > 4) telnet on port 25 from server as well as from client connects with the following, from either server or lan client: 220 gungho.prvnet ESMTP Sendmail 8.13.8/8.13.8; Mon, 9 Jun 2008 09:27:59 -0400 > > 5) ps auxxww |grep sendmail > ############################################### # ps auxwww|grep sendmail root 12861 0.0 0.2 8960 1920 ? Ss 08:42 0:00 sendmail: accepting connections smmsp 12869 0.0 0.1 8012 1484 ? Ss 08:42 0:00 sendmail: Queue runner at 01:00:00 for /var/spool/clientmqueue root 13249 0.0 0.0 3892 688 pts/2 S+ 09:28 0:00 grep sendmail > > 5) check maillog properly definitely it will throw some messages The only interesting thing here is: Jun 9 09:10:49 gungho sendmail[13074]: m59D9b47013074: lost input channel from [172.16.0.155] to smtp after mail > > 6) check /var/log/messages . > nothing unusual in the messages file. > > > Check the maillog otherwise increase the sendmail loglevel in the > sendmail.mc <http://sendmail.mc> file to 10 and restart sendmail. > > Line to be changed in sendmail.mc <http://sendmail.mc> to increase log > level. > > dnl define(`confLOG_LEVEL', `9')dnl done. I'll re-check logs now as well. > > Regards > lingu Thanks for your suggestions. I'll reply with status shortly -Ray