You can greet a judge by calling him or her a judge. You can also call them Mr. or Mrs.
His honor or Your honor is the proper salutation for a retired judge. The use of the word judge in title and introductions is not used after retirement.
Retired or not, the proper formal salutation should read: Honorable Walter K Smith Dear Sir:
The proper salutation for a probate judge is "The Honorable [Judge's Full Name]."
The proper salutation when writing to a judge is "Dear Judge [Last Name]" or "Your Honor."
The salutation for a retired General is "General". A retired general can also be addressed in a letter thus: General W. Smith (ret):
Your Honor
A retired judge can be referred to as "Judge [Last Name] (Retired)" or simply as "Retired Judge [Last Name]."
Dear Judge Smith and Mr. Smith.
The Salutation itself would not actually change once the officer has retired, it would still be rank, and name, such as 'Chief smith'.
The Honorable (similar to a judge)
Your Honor is the most common address. Judge xxx is also acceptable.
Proper usage would be Captain Joseph Brown NJSP, RET.3F7cz