Can't telnet port from this switch dell

Hi fellas,

i cant telnet port from this switch
i want to telnet smtp port 25 from dell switch

but the result is:

Value is out of range. The valid range is 1025 to 65535.

 

env2.sw.sf.c#telnet 172.30.50.135 25

Value is out of range. The valid range is 1025 to 65535.

env2.sw.sf.c#show version

Machine Description............... Dell Networking Switch
System Model ID................... N3024
Machine Type...................... Dell Networking N3024
Serial Number..................... CN0PDJ93282985CC0289A04
Manufacturer...................... 0xbc00
Burned In MAC Address............. 6400.6AE3.91FC
System Object ID.................. 1.3.6.1.4.1.674.10895.3057
SOC Version....................... BCM56342_A0
HW Version........................ 5
CPLD Version...................... 13
Image File........................ N3000_N2000v6.3.0.18
Software Capability............... ACCESS ROUTER

unit active backup current-active next-active
---- ----------- ----------- -------------- --------------
1 6.3.0.18 6.2.0.5 6.3.0.18 6.3.0.18
2 6.3.0.18 6.2.0.5 6.3.0.18 6.3.0.18

env2.sw.sf.c#telnet 172.30.50.20 25

Value is out of range. The valid range is 1025 to 65535.

env2.sw.sf.c#telnet 172.30.50.20 ?

Press enter to execute the command.
Enter the port no.
/debug Enable telnet debugging mode.
/line Enable telnet line mode.
/localecho Enable telnet localecho mode.


what should i do?