serg-tanichev opened a new pull request, #3196:
URL: https://github.com/apache/james-project/pull/3196

   The "After setup operations" list ends with sending a mail to a personal 
Gmail or Yahoo account and running a scoring service. Both steps work, and 
together they still leave the operator without the one answer that matters on a 
fresh deployment: did the message land in the inbox, and at which providers.
   
   Sending to your own Gmail address tests your own Gmail address. A new 
cluster usually means a new sending IP with no reputation, and the common 
failure is not a broken configuration but a correct configuration whose mail is 
filed as junk at some receivers and not at others. The other case this misses 
is a signature that James produced correctly and something in front of it 
altered in transit, which is invisible unless authentication is checked on the 
delivered copy rather than on the DNS record.
   
   So this adds one bullet next to the existing one, covering placement across 
a set of providers and authentication verified on what arrived.
   
   Disclosure: the linked service is mine. It is free, requires no account, and 
I have no stake in whether this is merged. Rewording, swapping the link for 
another placement checker, or closing this are all fine, and I will not follow 
up.
   


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