letsencrypt.sh AND www for domain

[Royal Flash]

I have box with hostname server23.example.com, without www.server23.example.com

I tried run letsencrypt.sh and get error:

./letsencrypt.sh request server23.example.com 4096
Setting up certificate for a hostname: server23.example.com
Getting challenge for server23.example.com from acme-server...
Waiting for domain verification...
Challenge is valid.
Getting challenge for www.server23.example.com from acme-server...
Error: http://www.server23.example.com/.well-known/acme-challenge/letsencrypt_XXXXXXX is not reachable. Aborting the script.
dig output for www.server23.example.com:
Please make sure /.well-known alias is setup in WWW server.


How can I refuse "Getting challenge for WWW.server23.example.com" and receive a certificate only for server23.example.com domain?

 

[smtalk]

Please try:

./letsencrypt.sh request_single server23.example.com 4096

 

[Royal Flash]

Thanks for the correct and fast response! Issue solved.