Script fails with 2 part domain suffixes.

[eternelpanic]

If you use this script for say ".com.au" based domains, the domain parsing in lines 204-220 of Get-NewLetsEncryptCertificate.ps1 and similarly in Register-LetsEncryptCertificateRequest.ps1 fails.
For example: hostname.example.com.au is broken into:
Hostname: hostname.example
FQDN: hostname.example.com.au
DnsZoneName: com.au

This prevents any certificates from being generated.

A basic patch is included, however Im certain this isnt the best approach to fix the issue, just a quick fix that works for me.

DomainSuffixFix.zip

[RobBiddle]

Thanks! I'll try to get a fix in place tomorrow.

[RobBiddle]

I think I may have fixed it, but I haven't tested it yet.
If you have time @eternelpanic , give the #1 branch a try: https://github.com/RobBiddle/ACMESharpRoute53Automation/tree/Issue1

[eternelpanic]

Unfortunatley that doesnt work. The DnsZoneName on line 208 and dnshost on 213 ends up incorrect...

The cert we are trying to generate is .online..com.au

I'll look more through it when I get further time.