Noted crawler suddenly rejected a second name in text? (5)

'noted crawler suddenly' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'rejected a second name in text?' is the wordplay.
'rejected' says the letters should be written backwards.
'second name' becomes 'a' (2nd letter of 'name').
'in' indicates putting letters inside.
'text?' becomes 'SMS' (abbreviation for Short Message Service).
'a' inserted within 'sms' is 'smas'.
'a'+'smas'='asmas'
'asmas' back-to-front is 'SAMSA'.

Can you help me to learn more?