build-pysnmp-mib -o IMAP_NORTHBOUND_MIB-V2.py IMAP_NORTHBOUND_MIB-V2.mib Empty input smidump -k -f python IMAP_NORTHBOUND_MIB-V2.mib | /bin/libsmi2pysnmp fails make sure you are using libsmi version > 0.4.5 (or svn)