=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching milter-regex-1.7.tar.gz
=> Total size: 19321 bytes
ftp: Error retrieving file `503 Backend unavailable, connection failed'
fetch: Unable to fetch expected file milter-regex-1.7.tar.gz
fetch: Size of the file milter-regex-1.7.tar.gz doesn't match.
ftp: Error retrieving file `503 Backend unavailable, connection failed'
fetch: Unable to fetch expected file milter-regex-1.7.tar.gz
=> Checksum SHA1 OK for milter-regex-1.7.tar.gz
=> Checksum RMD160 OK for milter-regex-1.7.tar.gz
=> Checksum SHA512 OK for milter-regex-1.7.tar.gz