This are the official and updated rules for Dutch nationals :
IMATIC-2 / 08SEP08 / 1053 UTC
NATIONAL NETHERLANDS (NL) /DESTINATION SYRIA (SY)
VISA DESTINATION SYRIA (SY)
...... NORMAL PASSPORTS ONLY ......
PASSPORT AND VISA REQUIRED.
VISA CAN BE OBTAINED ON ARRIVAL:
- AS COUNTRY OF NATIONALITY OF THE VISITOR HAS NO VISA
ISSUING REPRESENTATION. SEE >TIDFT/SY/VI/IS ITEM 2.; OR
- IF PRIOR ARRANGEMENT HAS BEEN MADE BY SYRIAN SPONSOR WITH
SYRIAN IMMIGRATION.
- IF TRAVELLING AS PART OF AN ORGANISED TOUR AS AN INDIVIDUAL
OR GROUP. OR
- FOR A MAX. STAY OF 15 DAYS, IF HOLDING A VISA FOR AND
TRAVELLING FROM LEBANON. OR
- BEING OF SYRIAN DESCENT.
[...]
VISA NOT REQUIRED IF RE-ENTERING SYRIA WITHIN ONE MONTH AFTER
DEPARTURE. APPLYING FOR A NEW VISA IS NOT REQUIRED EVEN IF
THE VISA IS EXPIRED.
ENTRY REFUSED IF:
A. PASSPORT CONTAINS:
- DECLARATION THAT IT IS VALID FOR ISRAEL; AND/OR
- VISA FOR ISRAEL (VALID OR EXPIRED); AND/OR
- STAMP INDICATING BORDER CROSSING ISRAEL-JORDAN; AND/OR
- EVIDENCE OF ENTRY AT SHARM EL SHEIKH, RAFHA, GAZA OR
NABLUS;
B. HOLDING TICKET SHOWING A POINT IN ISRAEL.
VISITORS MUST HOLD:
- RETURN/ONWARD TICKETS; AND
- ALL DOCUMENTS REQUIRED FOR NEXT DESTINATION; AND
- SUFFICIENT FUNDS.
JOURNALISTS MUST REPORT TO THE MINISTRY OF INFORMATION WITHIN
24 HOURS AFTER ARRIVAL.
EXIT PERMIT: IF PASSENGER INTENDS TO STAY MORE THAN 14 DAYS,
HE MUST REPORT AT THE IMMIGRATION HEAD OFFICE IN DAMASCUS.
ISSUE IS FREE OF CHARGE. NON-COMPLIANCE WITH THE VISA REGULATIONS WILL RESULT IN
DEPORTATION TO COUNTRY OF ORIGIN. TRANSPORTATION AND
DETENTION COSTS WILL BE AT CARRIER'S EXPENSE.