Hi, I moved into the current apt. about 1 year ago. Recently, the condo association has contacted me through their lawyer and told me that I should be paying my rent to them to cover for the amount that my landlord owes the association.
I don't have a written contract with my landlord. It's more like an agreement we've done through emails and conversations -- nothing signed.
1) Do I absolutely have to pay the association the same monthly rent amount I have "agreed" to pay my landlord?
2) Could I alternate monthly payments to the association and landlord? ..basically am I obligated to send my check to the association every month?

Must tenant pay rent to condominium association?
Under certain circumstances, when the owner of the condominium unit is delinquent in the payment of her condo fees, the association may require the tenants of that owner to pay rent directly to it. See Massachusetts General Laws Chapter 183A, Section 6(c):
If the unit owner fails to timely file a response in compliance with the foregoing requirements or admits in such response that he owes any amount to the organization of unit owners, the organization shall be entitled to immediately notify and direct each tenant renting such unit from such owner to thereafter pay all or a portion of the rent otherwise due by such unit owner to the organization, such rent or portion thereof to be limited to the lesser of: (i) the amount the organization claimed is due on its notice to the unit owner, if the unit owner failed to timely file a response in compliance with the requirements set forth above; or (ii) the amount such unit owner admitted was due in his timely filed response. The organization shall have a continuing right to collect any rent otherwise payable by the tenant to such unit owner, until such amount, plus any charges thereafter becoming due, are satisfied in full; provided, however, that nothing herein shall preclude the unit owner from seeking equitable relief from a court of competent jurisdiction or seeking a judicial determination of the amount owed; and, provided further, that nothing herein shall prevent the organization of unit owners from bringing an action under section five of chapter two hundred and fifty-four or to otherwise establish the amount owed to it by the unit owner or otherwise to seek and obtain an order requiring the tenant in such unit or tenants in other units owned by the unit owner in the condominium to pay to the organization rent otherwise due to the unit owner. If in any action brought to establish the amount owed by a unit owner to the organization, it is established that such unit owner knowingly misrepresented any material fact on any response filed pursuant to the provisions of this section, the organization shall be entitled to recover from such unit owner three times the amount determined to be owed by said unit owner at the time of his response. Further, the organization of unit owners shall be entitled to collect any charges thereafter becoming due and all of the organization's costs, including reasonable attorneys' fees, incurred in such action.
In no event shall a unit owner take any retaliatory action against any tenant who pays rent, or any portion thereof, to the organization of unit owners as provided in this section. The provisions of section eighteen of chapter one hundred and eighty-six and section two A of chapter two hundred and thirty-nine shall apply to any reprisal taken by a unit owner against a tenant who made or expressed an intention to make a payment to the organization pursuant to this section. Any waiver of the provisions of this section in any lease or rental agreement shall be void and unenforceable as against public policy.