The treatment of Tim Paine has been the worst experienced by an Australia Test captain for over 50 years, according to Cricket Tasmania's chairman.

The 36-year-old stood down from the Australian Test captaincy having been embroiled in a lewd text message scandal from 2017, which was investigated by Cricket Australia (CA) and Cricket Tasmania the following year.

At the time, Paine was found not to have breached CA's code of conduct and remained as Test captain, having taken up the position in 2018 following Steve Smith's demotion in light of the sandpaper ball-tampering scandal.

An emotional Paine made his resignation announcement on Friday after learning the messages were to be revealed publicly, and Tasmania chairman Andrew Gaggin has questioned his treatment. Paine plays domestic cricket for Tasmania.

"The treatment afforded to the Australian Test captain by Cricket Australia has been appalling," Gaggin said. "It is clear that the anger amongst the Tasmania cricket community and general public is palpable.

"At a time when Cricket Australia should have supported Tim, he was evidently regarded as dispensable. The treatment is the worst since Bill Lawry over 50 years ago."

Lawry, who was sacked as captain ahead of the final Test of the 1970-71 Ashes series, found out about it through the media.

Cricket Australia chair Richard Freudenstein and CEO Nick Hockley addressed media on Saturday and stressed they were not in their current positions at the time of the initial investigation, thus were not across the rationale behind the decisions made.

Freudenstein said: "While I cannot speak about the original decision-making in 2018, what I can say is that faced with the same circumstances, and with the benefit of all relevant information about this matter, Cricket Australia would not make the same decisions today.

"I acknowledge that the decision clearly sent the wrong message to the sport, to the community and to Tim – that this kind of behaviour is acceptable and without serious consequences. The role of Australia captain must be held to the highest standards."

At the time of the investigation, David Peever was CA chair and James Sutherland was the organisation's CEO.

Freudenstein added: "A decision was made in 2018 and that decision was final. The details weren't known to anyone who've been on the board since that stage."