We all know that failure to submit your bid proposal on time typically results in rejection. And the list of exceptions to this “late is late” rule is very short, providing only four notable exceptions: (1) an offeror has acceptable evidence of government control of a proposal; (2) an offeror can establish a systemic failure of government procedures resulting in multiple instances of lost information; (3) if electronically submitted, a proposal was received by government infrastructure by 5:00 p.m. one working day prior to the proposal submission date; and (4) if there is only one offeror. But what if you submitted your proposal on time and the agency’s server rejects the submission without bothering to inform you? And what if the basis for rejection was an undisclosed limitation within a server on email size? Does such delay qualify as an exception to the “late is late” rule? The answer depends on which forum you ask.