Samba share folder … user can read/write but cannot delete files

Creating and deleting files is controlled by permissions on the directory. Modifying the file is controlled by permissions on the file. You may have a mask which is removing the write privilege from the file.

For a folder in Samba to be writable ALL the following have to be true:

• Share must be configured in Samba to be writeable
• User must exist in Samba password database (did you copy your UNIX users to Samba users using mksmbpasswd?)
• User must appear in list of allowed users
• The specific subnet that the user is accessing from must appear in the list of allowed networks (i.e. if the user's IP is 192.168.2.8/24, the allowed network must be 192.168.2)
• The backing directory of the share must have appropriate permissions (i.e. be owned by the UNIX user:group that the Samba user maps to and/or the chmod must be high enough)