https://community.hpe.com/t5/operating-system-hp-ux/sendmail-id-patch-security/m-p/2527392#M890124 The header is defined in the sendmail.cf file as:<BR /><BR />HReceived: $?sfrom $s $.$?_($?s$|from $.$_)<BR /> $.by $j ($v/$Z)$?r with $r$. id $i$?u<BR /> for $u; $|;<BR /> $.$b<BR /><BR />The ($v/$Z) is the culprit. You should be able to remove it. Tue, 15 May 2001 11:56:31 GMT Dave Kelly_1 2001-05-15T11:56:31Z https://community.hpe.com/t5/operating-system-hp-ux/sendmail-id-patch-security/m-p/2527391#M890123 When Sendmail is delivering mail to my Exchange server, and presumably anywhere else, it identifies its version and patch level to the receiving server, as below;<BR /><BR />sendmail(8.9.3 (PHNE_18979)/8.7.1)<BR /><BR />which all and sundry can see in the email header.<BR /><BR />It seem to me that this is a security risk.<BR /><BR />Does anyone now how to prevent the version/patch level being passed onto receiver.<BR /><BR />Regards<BR /><BR />Chris<BR /><BR /> Fri, 11 May 2001 11:02:21 GMT https://community.hpe.com/t5/operating-system-hp-ux/sendmail-id-patch-security/m-p/2527391#M890123 Chris Watson 2001-05-11T11:02:21Z https://community.hpe.com/t5/operating-system-hp-ux/sendmail-id-patch-security/m-p/2527392#M890124 The header is defined in the sendmail.cf file as:<BR /><BR />HReceived: $?sfrom $s $.$?_($?s$|from $.$_)<BR /> $.by $j ($v/$Z)$?r with $r$. id $i$?u<BR /> for $u; $|;<BR /> $.$b<BR /><BR />The ($v/$Z) is the culprit. You should be able to remove it. Tue, 15 May 2001 11:56:31 GMT https://community.hpe.com/t5/operating-system-hp-ux/sendmail-id-patch-security/m-p/2527392#M890124 Dave Kelly_1 2001-05-15T11:56:31Z