[Renzo Mischianti]

Hi Gilles,

you can try 25, 2525, or 587 port for unencrypted connection, if you can’t use this ports mean that in your network these ports are blocked and you can’t use that.

Bye Renzo

[Renzo Mischianti]

Try to do

ping smtp.sendgrid.net

 

Esecuzione di Ping smtp.sendgrid.net [18.197.194.208] con 32 byte di dati:

 

and check if you can read the IP.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

refer to the topic of tpapas, that He use the service currently for his weather station.

Using EMail Sender library with Arduino UNO Ethernet shield with Ethernet.h library

 

I try with telnet and the result is

C:\Users\renzo>bash
reef@PORTATIREEF:/mnt/c/Users/renzo$ telnet smtp.sendgrid.net 25
Trying 18.197.194.208...
Connected to smtp.sendgrid.net.
Escape character is '^]'.
220 SG ESMTP service ready at geopod-ismtpd-4-0

 

 
Bye Renzo

[Renzo Mischianti]

Hi,

Return-Path: <>  is set by MAIL FROM: parameter, but is set by the SMTP server.

It’s strange that is empty.

Bye Renzo

[Renzo Mischianti]

Yes the library convert in base 64, but the code you posted use smtp from orange not sendgrid.

Bye Renzo

[Renzo Mischianti]

I don’t have w5500, i’m going to order one of that to do some test.

Theorically it can support secure connection, but i think some test is needed.

 

Bye Renzo

[Renzo Mischianti]

Hi Helano,

in the repo you don’t use EmailSender library, try to use the library you can avoid a lot of problem.

Bye Renzo

[Renzo Mischianti]

Hi Gilles,

you can’t use GMail or Orange with Arduino Ethernet because It not support secure connection.

SendGrid is not so simple to configure in this long topic we cover all configuration step of the service.

Using EMail Sender library with Arduino UNO Ethernet shield with Ethernet.h library

Bye Renzo

[Renzo Mischianti]

Ahh wait.. I use an esp8266, Arduino Mega can’t work with this service, because It need SSL/TSL encoding.

 

You must use a service like sendgrid 

Reply To: Weather radio station with Arduino UNO/MEGA Ethernet problem with EMailSender

Or you must change device, you can get an Arduino SAMD like here

Send email with attachments: Arduino SAMD boards (WiFiNINA) – 3

check here, I explain witch service you can use.

Send email with attachments (v2.x library): Arduino Ethernet – 1

Bye Renzo

[Renzo Mischianti]

Hi Gilles,
I check and try, I think the problem is the from IP.

If I try to send with GMail verso Orange It work correctly, but if i try from Orange to Orange It go to SPAM

X-me-spamcause : (125)(1000)gggruggvucftvghtrhhoucdtuddrgeduledrleekgdeijecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfogfdpggftiffpkfdpqfgfvfdpffgvsghughdqvfhmphfhihhlvgenuceurghilhhouhhtmecugedttdenucfjvggruggvrhcuvghrrhhorhculdehtddmnefpohcuuggrthgvuchfihgvlhguucdlgeelmdenogfqfgfvqdetgedtkedqtddvqdhtvghrucdluddmnegotffhvedqqdfjughrqdfuuhhsphgvtghtqdhlohifucdlhedmnegotffhvedqqdfjughrqdfuuhhsphgvtghtucdlvddtmdenucfjughrpefhvffugggttgfgsehtjedtredttdejnecuhfhrohhmpeeorhgvnhiiohdrmhhishgthhhirghnthhisehorhgrnhhgvgdrfhhrqeenucggtffrrghtthgvrhhnpeekvdegffeuieekhfdvueeitdetvedugfejveeivddvledvvedtgffgvdefhfelleenucfkphepvdduvddrvdduiedrvdduuddrudekvdenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhephhgvlhhopehmihhstghhihgrnhhtihempdhinhgvthepvdduvddrvdduiedrvdduuddrudekvddpmhgrihhlfhhrohhmpehrvghniihordhmihhstghhihgrnhhtihesohhrrghnghgvrdhfrhdprhgtphhtthhopehrvghniihordhmihhstghhihgrnhhtihesghhmrghilhdrtghomhdprhgtphhtthhopehrvghniihordhmihhstghhihgrnhhtihesohhrrghnghgvrd

 

with error 125 (that it is greater than 100) at this link say that error > 100

There is an additional header called “X-ME-spam cause”. If the value in this first bracket is higher than 100, then Vade Secure has flagged your mail as spam.

And in the detail of message

Received : from opme11dod06nd1.rouen.francetelecom.fr ([10.79.5.102]) by opme11dob14nd1.rouen.francetelecom.fr with LMTP id MNDOK8P9PGDoWwAASTXmBw ; Mon, 01 Mar 2021 15:44:19 +0100,from opme11ppr01nd1.rouen.francetelecom.fr ([10.79.5.102]) by opme11dod06nd1.rouen.francetelecom.fr with LMTP id iIG2K8P9PGD+RQAAhj82FQ ; Mon, 01 Mar 2021 15:44:19 +0100,from mwinf5d03 ([10.79.5.102]) by opme11ppr01nd1.rouen.francetelecom.fr with LMTP id eOj5DsP9PGAYHAAAKPHnNg (envelope-from <renzo.mischianti@orange.fr>) for <renzo.mischianti@orange.fr>; Mon, 01 Mar 2021 15:44:19 +0100,from mischianti: ([212.216.211.182]) by mwinf5d03 with ME id b2kC2400L3wge1w032kDW4; Mon, 01 Mar 2021 15:44:19 +0100

And you can check https://www.spamhaus.org/query/ip/212.216.211.182 that the FROM IP is market as spam.

So the result is that orange.fr with his service Vade Secure block orange.fr SMTP emails. You can try to write to your company to fix this wrong categorization.

Bye Renzo

[Renzo Mischianti]

Hi helaino,
sorry but I don’t understand, can you explain better with a code example.
Thanks Renzo

[Renzo Mischianti]

Hi Gilles,
It’s an unexpected behavior the use of an array of 0 lenght, I must look the code to check what happens in that situation.
Bye Renzo

[Renzo Mischianti]

Hi Gilles,
if you can do a mail for me I try this or tomorrow evening to do the change.
Send me the password to info@mischianti.org .
Bye Renzo

[Renzo Mischianti]

Hi Gilles,
only for confirmation, you use an Arduino Mega and a w5100 shield, and can you tell me the size of the file you want send?
Bye Renzo

[Renzo Mischianti]

Hi max7777,
I try the code with my WeMos D1 mini, and It’s work correctly.
You had follow the tutorial to enable less secure app or application passwd?

Send email with attachments (EMailSender v2.x library): esp32 and esp8266 – 2

Bye Renzo

[Author]

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