log error messages
Nov 17 13:19:39 mail postfix/smtpd[25277]: warning: hostname hn.kd.ny.adsl does not resolve to address 115.58.134.207
Nov 17 13:19:39 mail postfix/smtpd[25277]: connect from unknown[115.58.134.207]
Nov 17 13:19:39 mail postfix/smtpd[25277]: lost connection after CONNECT from unknown[115.58.134.207]
Nov 17 13:19:39 mail postfix/smtpd[25277]: disconnect from unknown[115.58.134.207]
Nov 17 13:19:47 mail postfix/smtpd[25274]: warning: hostname hn.kd.ny.adsl does not resolve to address 115.58.134.207
Nov 17 13:19:47 mail postfix/smtpd[25274]: connect from unknown[115.58.134.207]
Nov 17 13:19:47 mail postfix/smtpd[25274]: lost connection after CONNECT from unknown[115.58.134.207]
Nov 17 13:19:47 mail postfix/smtpd[25274]: disconnect from unknown[115.58.134.207]
Nov 17 13:20:16 mail postfix/smtpd[25277]: connect from nm37-vm8.bullet.mail.gq1.yahoo.com[98.136.217.44]
Nov 17 13:20:17 mail postfix/smtpd[25277]: SSL_accept error from nm37-vm8.bullet.mail.gq1.yahoo.com[98.136.217.44]: lost connection
Nov 17 13:20:17 mail postfix/smtpd[25277]: lost connection after STARTTLS from nm37-vm8.bullet.mail.gq1.yahoo.com[98.136.217.44]
Nov 17 13:20:17 mail postfix/smtpd[25277]: disconnect from nm37-vm8.bullet.mail.gq1.yahoo.com[98.136.217.44]