The transaction was rejected because it is too large (in bytes)

How large is your transaction ? How many inputs / outputs ?
The maximum size a transaction can have to be considered standard (non-standard tx's are going to be rejected by nodes) is 100kB. [1]

[1] https://github.com/bitcoin/bitcoin/blob/3c098a8aa0780009c11b66b1a5d488a928629ebf/src/policy/policy.h#L24

Indeed i think he is sending with alot of inputs (exchange addresses) making the script to large.