Solved - the difference was that these two users also didn't have a .qmail in their home directory at all. (I had set them up before I had /etc/skel fleshed out.) Thanks again for your help.
- deferral: /bin/sh:_./Maildir/:_is_a_directory/ Stephen Froehlich
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Charles Cazabon
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Greg White
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Henning Brauer
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Russell Nelson
- Re: deferral: /bin/sh:_./Maildir/:_is_a_... Stephen Froehlich
- Re: deferral: /bin/sh:_./Maildir/:_i... Charles Cazabon
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Stephen Froehlich
- Re: deferral: /bin/sh:_./Maildir/:_is_a_... Charles Cazabon
- Re: deferral: /bin/sh:_./Maildir/:_i... Stephen Froehlich
- Re: deferral: /bin/sh:_./Maildir... Charles Cazabon
- Re: deferral: /bin/sh:_./Maildir/:_is_a_dire... Stephen Froehlich
- RE: deferral: /bin/sh:_./Maildir/:_is_a_dire... Williams, Paul (OTS-EDH)
- Re: deferral: /bin/sh:_./Maildir/:_is_a_... Stephen Froehlich
