Our Indonesian teacher had a take on how we use “Dengan hormat,” (the English equivalent is “Yours faithfully” but we put it in the beginning instead of the end) when we write a formal letter

He stated that in theory:

• The comma shouldn’t be used, since it’s not a valid sentence ending

• The “D” should not be a capital letter, since it’s not a proper sentence (this also disqualifies using a period to end the phrase)