A7 Module TCP commands not working

Hello sir ,
One small query…im using a7 module…i am unable to establish connection with my server using the command
"AT+CIPSTART=“TCP”,“www.mydomainname.com”,80" . it showing error as
+cme error 50 . but it is establishing connection with the other websites like google…facebook etc.

I am not sure A7 has the same TCP command as the SIMCOM modules. Please check data sheet and confirm,

P.S: Please create separate topic for new discussion, I have split the topic now.

sir It is showing connected status with google.com and other websites… how can we perform http in a7… how to send data to webserver from a7…how can we do it?

@vamshi_krishna checkout https://www.elecrow.com/wiki/index.php?title=32u4_with_A7_GPRS/GSM
and checkout the datasheet at https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwjl8b6etcrZAhXK1xQKHd4vA7AQFggmMAA&url=https%3A%2F%2Fwww.makerfabs.com%2Fdesfile%2Ffiles%2FA6A7A6CA20_AT_Commends.pdf&usg=AOvVaw1brDqvA77qV-QJgsI1iLa5

Well i gone through all the data sheets elecrow provided for A7…It is showing connected status with the command AT+CIPSTART = “TCP”,“www.google.com”,80.but it is not showing same status for my site. do i have to make any changes at server side or i dont know what the problem is…

Ensure that the port you are trying to connect to is open on your server,
For linux to see status of the firewall type, in command line "sudo ufw status"
This will list all open ports. If your port is not here, type "sudo ufw allow 1883"
or any other port of your choice

okay Thank you for the info.

I had that problem too. but now it shows connection Ok with my domain , but not post the data to domain.
suggestion please.