The two points Rhodesian Prime Minister Ian Smith's speech noted here were his vitrolic attack on Tanzanian President Julius Nyerere and the fact that Smith did not close the door to future contacts with guerrilla leader Joshua Nkomo.

Last month, Smith met secretly here with Nkomo in an effort to seek an agreement which would put an end to the guerilla war. But the secret diplomatic initiative, which was backed by Zambia, was halted when the contacts were made public by one of Smith's black colleagues in the Salisbury government, the Rev. Ndabaningi Sithole. Sources close to the Zambian government say it was Nyerere who put the damper on future talks by encouraging Sithole to reveal the talks to the press.

Smith's accusations were only slightly harsher than those leveled against Nyerere by Nkomo in private and last week the guerrilla leader, whose Soviet-armed forces operate from bases in Zambia, publicly accused Nyerere of interring in Rhodesian affairs.

Last weekend at a summit here of the five 'front-line states' which are trying to find a solution to the Rhodesian conflict - Zambia, Tanzania, Angola, Botswana and Mozambique - Nkomo and Nyerere had what some observers described as a shouting match as they disagreed over future tactics in bringing an end to the war and over the value of future direct contacts with Smith.