501 5.5.4 Invalid arguments

[martinwozenilek]

Hi,

when I connect to MS Exchange on port 25 I get "501 5.5.4 Invalid arguments". Is this a known problem? When I connect to the server with telnet on port 25 and type the commands by hand everything works fine (mail from: / rcpt to: / data / ...) and the mail is delivered.

From the debug:

12:26:39.637 -> Sending message header...
12:26:39.637 -> > C: send message header
12:26:39.637 -> MAIL FROM:martin.wozenilek@bla.bla
12:26:39.637 -> 250 2.1.0 Sender OK
12:26:39.637 -> < S: 250 2.1.0 Sender OK
12:26:39.637 -> RCPT TO:bla@bla.bla NOTIFY=
12:26:39.637 -> 501 5.5.4 Invalid arguments
12:26:39.637 -> < S: 501 5.5.4 Invalid arguments
12:26:39.637 -> Error, set recipient failed
12:26:39.637 -> > E: set recipient failed

Thanks!

Martin

[mobizt]

Not all SMTP servers support Delivery Status Notification (DSN) which assigned with
message.response.notify

Check your SMTP server capabilities before usage.

[martinwozenilek]

I've tried now to put in an IP, but still same error message ...

session.login.user_domain = "172.21.201.114";
session.secure.startTLS = (false);

Further the startTLS = (false) does not disable TLS.

Could the problem be the NOTIFY in "12:26:39.637 -> RCPT TO:bla@bla.bla NOTIFY=" ???

Can I disable the "NOTIFY=" in ESP32?

[mobizt]

Just not assign it is disable by default.

[martinwozenilek]

Works! There was a line in the example i've missed. Thanks!!!