Setting up postfix (3.3.0-1ubuntu0.1) ...
setting myhostname=akhilesh-Predator-G3-571..name in /etc/postfix
Postfix (main.cf) is now set up with the changes above. If you need to make
changes, edit /etc/postfix/main.cf (and others) as needed. To view Postfix
configuration values, see postconf(1).
After modifying main.cf, be sure to run 'service postfix reload'.
Running newaliases
newaliases: warning: valid_hostname: misplaced delimiter: akhilesh-Predator-G3-571..name
newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: akhilesh-Predator-G3-571..name
dpkg: error processing package postfix (--configure):
installed postfix package post-installation script subprocess returned error exit status 75
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Errors were encountered while processing:
postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)
我不断将 myhostname 更改为有效名称，例如“akhilesh”并运行：
sudo service postfix restart
再次，后缀会将其更改为上述名称，或添加“..name”。这有什么问题？
答案1
尝试设置myhostname=akhilesh.name（主机名与域名“.name”（或“.localdomain”））。接下来，运行sudo service postfix reload。它改变了 myhostname 值并为我解决了错误。
答案2
Static hostname: xps.lin.com
Chassis: laptop
Operating System: Ubuntu 21.04
Kernel: Linux 5.11.0-25-generic
Architecture: x86-64
我遇到了与您同样的问题，但在我将主机名从 更改为 后，xps问题xps.lin.com就解决了。
因此我认为主机名应该具有的格式*.*.*，这就是为什么系统不断添加..主机名以符合该格式的原因。