The embargo on international surface mail caused by the 33-day long-shoremen's strike on the East and Gulf Coasts has been lifted to some destinations, the U.S. Postal Service has announced.

That means that packages and letters can once again be shipped to and from South and Central America, most of Africa and the Middle East, as well as Greenland and Iceland.

However, many other nations will ocntinue under the Postal Service's embargo until the strike ends. That means that only air mail service will be available to and from: Austria, Belgium, Czechoslovakia, Denmark, Finland, France, Gabon, East Germany, West Germany, Great Britain, Greece, Liechtenstein, Puerto Rico, Ireland, Israel, Luxembourg, Spain, Sweden, Switzerland, the USSR, Virgin Islands and Wales.

The Postal Service said these nations continue to be affected by the strike because surface mail transportation to and from them depends solely on highly mechanized containerized ships.

The International Longshoremen's Association declared a strike against these ships Oct. 1 because they claim these vessels will put them out of work.

The Postal Service said that all military mail and surface mail to Canada, Mexico, Cuba and destinations in the Pacific are not restricted by the strike.