354 End data with <CR><LF>.<CR><LF>

[DigiHzData]

I use smtp to send emails.
In the debug output i get for 1 smtp server:
11:43:16.482 -> #### Sending message body...
11:43:16.482 -> > C: send message body
11:43:16.482 -> < S: 354 End data with .

And in another smtp server i test with i get:
07:27:53.612 -> #### Sending message body...
07:27:53.612 -> > C: send message body
07:27:53.612 -> < S: 354 Enter message, ending with "." on a line by itself

I have no problem sending and recieving the emails.
But i wonder how to add the "dot" to the email message so that the 354 is OK. (For plain text and html messages).

Is it not a chance that the emails will be treated as spam or even might be blocked with this 253 response from the server?

Anyone have any solution to this or thought about it?

Thank you in advance.

[mobizt]

It is normal as just server information and you don't have to do anything because library does this internally.

No spamming and server rejection related for all mail client operations included this library.

At least you have to provide the right information of your domain and IP.

ESP-Mail-Client/examples/SMTP/Send_Text/Send_Text.ino

Lines 159 to 167 in d0e5bfe

	/** Assign your host name or you public IPv4 or IPv6 only
	* as this is the part of EHLO/HELO command to identify the client system
	* to prevent connection rejection.
	* If host name or public IP is not available, ignore this or
	* use loopback address "127.0.0.1".
	*
	* Assign any text to this option may cause the connection rejection.
	*/
	config.login.user_domain = F("127.0.0.1");

And you have to provide or set the device time correctly.
https://github.com/mobizt/ESP-Mail-Client/blob/master/examples/SMTP/Set_Time/Set_Time.ino