X-DOS under open ports (IS-DOS) glitches when sending mail

Greetings, All! The following glitch was detected: when sending mail larger than 2048 bytes Wild hangs himself tightly, can only be treated with Reset. If the mail size is less than 2048 bytes, then everything is sent normally. Tested on HYDRA and ZMODEM protocols, the result is the same. All the best, All! Best wishes *** Sergey ***! >>