=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Fetching postfix-3.4.6.tar.gz
=> Total size: 4571771 bytes
ftp: Can't connect to `2001:4f8:0:2::1e:80': No route to host
ftp: Can't connect to `204.152.184.134:80': Operation timed out
ftp: Can't connect to `mirrors.isc.org:http'
fetch: Unable to fetch expected file postfix-3.4.6.tar.gz
=> Checksum SHA1 OK for postfix-3.4.6.tar.gz
=> Checksum RMD160 OK for postfix-3.4.6.tar.gz
=> Checksum SHA512 OK for postfix-3.4.6.tar.gz