If you try to add with objectClass: mailrecipient , does it work ? dn: uid=apache,ou=People,dc=im,dc=logica,dc=com uid: apache cn: Apache sn: Apache mail: <a href="mailto:apache@logica.com">apache@logica.com</a> mailRoutingAddress: <a href="mailto:apache@mail.logica.com">apache@mail.logica.com</a> mailHost: <a href="http://mail.logica.com">mail.logica.com</a> objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount objectClass: top objectClass: shadowAccount objectClass: mailrecipient userPassword: {crypt}!! shadowLastChange: 13801 shadowMax: 99999 shadowWarning: 7 loginShell: /sbin/nologin uidNumber: 48 gidNumber: 48 homeDirectory: /var/www gecos: Apache Fabrice <div>2008/2/15, Singh Raina, Ajeet <<a href="mailto:ajeet.singh.raina@logicacmg.com">ajeet.singh.raina@logicacmg.com</a>>:<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div link="blue" vlink="purple" lang="EN-US"> <div> I migrated my # ypcat passwd > /tmp/passwd.ldif through the perl script and I had few entry of the same as below pasted: dn: uid=apache,ou=People,dc=im,dc=logica,dc=com uid: apache cn: Apache sn: Apache mail: <a href="mailto:apache@logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@logica.com</a> mailRoutingAddress: <a href="mailto:apache@mail.logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@mail.logica.com</a> mailHost: <a href="http://mail.logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">mail.logica.com</a> objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount objectClass: top objectClass: shadowAccount userPassword: {crypt}!! shadowLastChange: 13801 shadowMax: 99999 shadowWarning: 7 loginShell: /sbin/nologin uidNumber: 48 gidNumber: 48 homeDirectory: /var/www gecos: Apache When I am trying to import into the databases it is throwing error as below: uid=apache,ou=People,dc=im,dc=logica,dc=com: Error adding object 'dn: uid=apache,ou=People,dc=im,dc=logica,dc=com'. The error sent by the server was 'Object class violation. attribute "mailHost" not allowed '. The object is: LDAPEntry: uid=apache,ou=People,dc=im,dc=logica,dc=com; LDAPAttributeSet: LDAPAttribute {type='sn', values='Apache'} LDAPAttribute {type='loginshell', values='/sbin/nologin'} LDAPAttribute {type='userpassword', values='{crypt}!!'} LDAPAttribute {type='gidnumber', values='48'} LDAPAttribute {type='uidnumber', values='48'} LDAPAttribute {type='mail', values='<a href="mailto:apache@logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@logica.com</a>'} LDAPAttribute {type='shadowmax', values='99999'} LDAPAttribute {type='objectclass', values='person,organizationalPerson,inetOrgPerson,posixAccount,top,shadowAccount'} LDAPAttribute {type='uid', values='apache'} LDAPAttribute {type='gecos', values='Apache'} LDAPAttribute {type='shadowlastchange', values='13801'} LDAPAttribute {type='mailhost', values='<a href="http://mail.logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">mail.logica.com</a>'} LDAPAttribute {type='mailroutingaddress', values='<a href="mailto:apache@mail.logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@mail.logica.com</a>'} LDAPAttribute {type='cn', values='Apache'} LDAPAttribute {type='homedirectory', values='/var/www'} LDAPAttribute {type='shadowwarning', values='7'}. Now when I am deleting these lines: mail: <a href="mailto:apache@logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@logica.com</a> mailRoutingAddress: <a href="mailto:apache@mail.logica.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">apache@mail.logica.com</a> It seems to work. Any idea how I should configure my DS to stop these errors. Pls Help </div> This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you. </div> -- Fedora-directory-users mailing list <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:Fedora-directory-users@redhat.com">Fedora-directory-users@redhat.com</a> <a onclick="return top.js.OpenExtLink(window,event,this)" href="https://www.redhat.com/mailman/listinfo/fedora-directory-users" target="_blank">https://www.redhat.com/mailman/listinfo/fedora-directory-users</a> </blockquote></div>