SMTP error: We do not authorize the use of this system to transport unsolicited change number response

[dmarc1234]

Hi Renzo

I am trying to use your library with companies SMTP server but I to am getting ‘220-We do not authorize the use of this system to transport unsolicited errors’

This what I get back:

ONLY ONE RECIPIENTmiltiple destination and attachments
Insecure client:1
mail.designersystems.co.uk
587
220-s200.servername.online ESMTP Exim 4.95 #2 Wed, 01 Feb 2023 18:52:30 +0100
EHLO david
220-We do not authorize the use of this system to transport unsolicited,
[EMAIL] Status:
0
250
Identification error (220-We do not authorize the use of this system to transport unsolicited.

I have played around with the HELO and EHLO setting but nothing seems to work, any ideas ?

Host is HostPapa.

David

[Renzo Mischianti]

Hi David,
post your code and enable DEBUG variable to get the debug output.
Bye Renzo

[Sebastian]

Hi Renzo!

Time that I don’t write to you. How are you doing?

I have the same problem using the last update for this library. How can I enable the debug?

Greetings, Sebastian

[Sebastian]

By the way, I’m using this board

[Renzo Mischianti]

Hi Sebastian,
to enable DEBUG uncomment this line.

An additional test is to enable automatic response by setting the value to ‘a’ at this line.

Bye Renzo

[Sebastian]

Hi Renzo,

I do the changes and attached the output, but the problem persists 🙁

Bye, Sebastian

[Sebastian]

Hi Renzo!

I have news. I got now the following output:

19:35:41.695 -> Connecting to ADLERNET_TEST
19:35:41.993 -> …………
19:35:44.247 -> Connection: ESTABLISHED
19:35:44.247 -> Got IP address: 88.15.1.101
19:35:44.247 -> ONLY ONE RECIPIENTmultiple destination and attachments
19:35:44.247 -> Insecure client:1
19:35:44.247 -> mail.****.cl
19:35:44.247 -> 465
19:35:46.336 -> 220-yoda.dhn.cl ESMTP Exim 4.96 #2 Sun, 09 Apr 2023 19:35:47 -0400

19:35:46.336 -> 220-We do not authorize the use of this system to transport unsolicited,

19:35:46.336 -> 220 and/or bulk e-mail.

19:35:48.822 -> HELO mischianti
19:35:48.888 -> 250 yoda.dhn.cl Hello ASPA [xxx.xx.xxx.xx]

19:35:48.888 -> AUTH LOGIN:
19:35:48.888 -> 503 AUTH command used when not advertised

19:35:48.888 -> Encoding
19:35:48.888 -> ****@****.com
19:35:48.888 -> 26
19:35:48.888 -> [coded mail]
19:35:48.888 -> Encoding
19:35:48.888 -> ****@****.com
19:35:48.888 -> 26
19:35:48.888 -> 500 unrecognized command

19:35:48.888 -> Encoding
19:35:48.888 -> ****
19:35:48.888 -> 12
19:35:48.888 -> [coded pass]
19:35:48.888 -> Encoding
19:35:48.888 -> ****
19:35:48.888 -> 12
19:35:48.888 -> 500 unrecognized command

19:35:48.888 -> Sending status:
19:35:48.888 -> 0
19:35:48.888 -> 235
19:35:48.888 -> SMTP AUTH error (500 unrecognized command
)

I believe that the SMTP AUTH error is for other reason. The pass and E-Mail are OK. Maybe I need a credential?

Greetings, Sebastian

[Sebastian]

Hi Renzo, Sebastián again. I solved the problem. I added awaitSMTPResponse(client); in line 531 of file EMailSender.cpp and actualized the trust_achors.h with my domain. All works fine!

Thanks a lot for your time, Renzo. You do a great job and I learn you always.

Greetings, Sebastian

[Renzo Mischianti]

Hi Sebastian,
to manage additional await, you can put 1 to this variable.

Bye Renzo

[Author]

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