i want to send an email from labview with an attachment. i check telnet smtp.gmail.com 587 and this port is open and my computer has an access to it. but i don't know whats the problem is LabVIEW.
and also ,i have tried smtp.mail.yahoo.com 465 but the problem is still. the connection everything is ok.
Thanks for helping me.
Best Regards
I think you forgot to add a colon between server name "smtp.gmail.com" and port "587"
https://www.ni.com/docs/en-US/bundle/labview/page/lvcomm/smtp_open_handle.html
server address specifies the hostname or IP address of the SMTP server
you want to use to send emails. You also can specify a port number by
appending a colon and the port number to the hostname or IP address in
the format hostname:port. By default, LabVIEW uses port 25, which
works only for non-TLS SMTP servers.
Finally done!
i send by outlook service.
I am configuring msmtprc smtp to send an outbound email and having a trouble with office365. It's working fine with Gmail account, but I am getting the following error with office 365.
msmtp: authentication failed (method LOGIN)
msmtp: server message: 535 5.7.3 Authentication unsuccessful [BN6PR13CA0016.namprd13.prod.outlook.com]
msmtp: could not send mail (account default from /etc/msmtprc)
/var/log/msmtp.log
Authentication unsuccessful [BN6PR13CA0016.namprd13.prod.outlook.com]' errormsg='authentication failed (method LOGIN)' exitcode=EX_NOPERM
/etc/msmtprc
defaults
auth on
logfile /var/log/msmtp.log
account office
host smtp.office365.com
port 587
protocol smtp
from support#example.net
user support#example.net
password *******
tls on
tls_starttls on
tls_trust_file /etc/pki/tls/certs/ca-bundle.crt
Does anyone successfully use Msmtprc with office365?
Thank you.
I've been successfully using msmtp fine for quite some time, using the following settings (on a CentOS 7 box), but with the config in $HOME/.msmtprc since it's just for my user rather than globally:
account default
host smtp.office365.com
port 587
tls on
tls_starttls on
tls_trust_file /etc/ssl/certs/ca-bundle.crt
tls_certcheck on
auth on
user username#example.com
passwordeval pass office365.com
from username#example.com
logfile ~/.msmtp.d/msmtp.log
..so this is 99% the same as yours except that instead of having the password in the file I'm using passwordeval to provide it via the output of the given command.
Perhaps multiple spaces between password and the password itself is causing the spaces to be added to the start of the password?
You could also try running msmtp so that it has a controlling terminal (i.e. run from the shell rather than via the service manager as with systemctl) to test whether providing it the password that way works as expected?
I'm trying to send an email with netcat, this is what i get:
****-MacBook-Pro:~ ***$ nc smtp.gmail.com 25
220 mx.google.com ESMTP h8sm66301168eew.16 - gsmtp
Helo gmail.com
250 mx.google.com at your service
MAIL FROM: <******#gmail.com>
530 5.7.0 Must issue a STARTTLS command first. h8sm66301168eew.16 - gsmtp
what is STARTTLS command and what do i need to do with it?
STARTTLS is an extension to plain text communication protocols, which offers a way to upgrade a plain text connection to an encrypted (TLS or SSL) connection instead of using a separate port for encrypted communication.
http://en.wikipedia.org/wiki/STARTTLS
The smtp server is saying it won't accept plain text connections.
You basicaly just need to specify that you're using TLS.
Use EHLO instead of HELO. This will start 250-STARTTLS.
In my web application I have created a mail sender class and set the configurations of web.config file like this:
<mailSettings>
<smtp deliveryMethod="PickupDirectoryFromIis">
<network host="smtp.domain.com"
port="587"
userName="mail#domain.com"
password="password"/>
</smtp>
</mailSettings>
This is sending email. But SQL Server database mail can not send mail with the same account info.
Only one difference is PickupDirectoryFromIis .
Is there any setting on exchange server?
In the SQL Server Logs the errors are following.
Message
The mail could not be sent to the recipients because of the mail
server failure. (Sending Mail using Account 2 (2012-09-30T16:55:04).
Exception Message: Cannot send mails to mail server. (The SMTP server
requires a secure connection or the client was not authenticated. The
server response was: 5.7.1 Client was not authenticated).
Looks like this is a Authentication issue or port no issue.
Authentication Issue:
—————————-
Please make sure you have put the information as explained below:
Server name: smtp.gmail.com ( this is really important)
port no: 587 ( on many website this is given as 465 which is wrong, use 587 )
Check : This server requires a secure connection
Check Basic Authentication
username: youremailid#gmail.com ( should have gmail.com)
password: XXXXXXXXXXXXX
confirm password: confirm your password
Port No Issue:
——————–
Make sure port 587 is opened in your machine if you are following above example. If you are using any other port number (usually its port 25) to set up database mail in your office, make sure you speak with your security team and ask them to unblock port 25. Once they unblock port 25, your databasemail will work.
Network Connectivity:
—————————–
Also check network connectivity from your machine, if you can connect to internet from your machine on which you are testing your database mail. To test, do the following
Start- Run- type cmd – Hit Enter
Type ping gmail.com -t and then hit enter.
If output displays as Request timed out, it actually means there is network connectivity problem. Otherwise, your network connectivity is good.
I am in the process of writing an application that sends mail via an valid GMail user ID and password.
I just wanted to simulate the SMTP connection on my Windows XP command line, and when I telnet smtp.gmail.com at 465 port - I don't see any thing. A blank command window with title Telnet smtp.gmail.com opens with cursor. When I type in EHLO or usual SMTP handshake commands, the prompt just closes.
I am unable to figure out whats going wrong and where. I tried connecting to 587, it does not connect in telnet at all. Could anyone please clarify if I am doing something wrong?
Using Linux or OSx, do what Sorin recommended but use port 465 instead. 25 is the generic SMTP port, but not what GMail uses. Also, I don't believe you want to use -starttls smtp
openssl s_client -connect smtp.gmail.com:465
You should get lots of information on the SSL session and the response:
220 mx.google.com ...
Type in
HELO smtp.gmail.com
and you'll receive:
250 mx.google.com at your service
From there it is not quite as straightforward as just sending SMTP messages because Gmail has protections in place to ensure you only send emails appearing to be from accounts that actually belong to you. Instead of typing in "Helo", use "Ehlo". I don't know much about SMTP so I cannot explain the difference, and don't have time to research much. Perhaps someone with more knowledge can explain.
Then, type "auth login" and you will receive the following:
334 VXNlcm5hbWU6
This is essentially the word "Username" encoded in Base 64. Using a Base 64 encoder such as this one, encode your user name and enter it. Do the same for your password, which is requested next. You should see:
235 2.7.0 Accepted
And that's it, you're logged in.
There is one more oddity to overcome if you're using OSx or Linux terminals. Just pressing the "ENTER" key does not apparently result in a CRLF which SMTP needs to end a message. You have to use "CTRL+V+ENTER". So, this should look like the following:
^M
.^M
250 2.0.0 OK
For OSX' terminal:
openssl s_client -connect smtp.gmail.com:25 -starttls smtp
Start session from terminal:
openssl s_client -connect smtp.gmail.com:25 -starttls smtp
The last line of the response should be "250 SMTPUTF8"
Initiate login
auth login
This should return "334 VXNlcm5hbWU6".
Type username
Type your username in base64 encoding (eg. echo -n 'your-username' | base64)
This should return "334 UGFzc3dvcmQ6"
Type password
Type your password in base64 encoding (eg. echo -n 'your-password' | base64)
Success
You should see "235 2.7.0 Accepted" and you're are successfully logged in
Gmail require SMTP communication with their server to be encrypted. Although you're opening up a connection to Gmail's server on port 465, unfortunately you won't be able to communicate with it in plaintext as Gmail require you to use STARTTLS/SSL encryption for the connection.
Jadaaih, you can connect send SMTP through CURL - link to Curl Developer Community.
This is Curl Email Client source.
Check this post in lifehacker : Geek to Live: Back up Gmail with fetchmail . It uses a command line program. Check and see if it helps. BTW why are you using command line when there are many other nice alternatives?
tcp/465 was initially intended for establishing the SSL(and newer TLS) layer first, and inside doing cleartext or plain old protocols (smtp here)
tcp/587 was intended as a replacement to default tcp/25 port initially when spammers and mass mailing attacks commenced like a decade or more ago, but also during those infamous AOL ages, when some funny ISP had some blocks on default ports outbound (such as that tcp/25) for denying their own customers (AOL) to mass-send emails/spam back then, but AOL-customers needing to use alternative mail-accounts and mail-providers still needed to send their mails from AOL-internet connections, so they could still connect to tcp/587 and do simple smtp on it back then.
The deal with the STARTTLS way to do smtp is to use the two well known originally plain-text tcp/25 and tcp/587 ports, and only when the initial clear-text connect suceeded, to then START the TLS layer (thus STARTTLS) from there on, having a secured connection from that point onwards.
As for debugging these kind of things maybe via command-line tools, for example for windows there is the historical blat command line mailer (smtp), which up till today cant do TLS (STARTTLS) so it can only use plain-text smtp to send its mails.
http://www.blat.net/
Then there are numerous projects freeware and open source software that have more capabilities and features, such as
smtp client: mailsend # googlecode
http://code.google.com/p/mailsend/
smtp client: msmtp # sourceforge (related to mpop below)
http://msmtp.sourceforge.net/
pop3 client: mpop # sourceforge
http://mpop.sourceforge.net/
How to connect to "Google SMTP mail server" from the command line?
1] SSL connect command
openssl s_client -connect {{server_name}}:{{server_port}} -crlf -quiet -starttls smtp
with variables
server_name: smtp.gmail.com
server_port: 587
user_name__hash: echo -n '{{user_name}}' | base64
user_password__hash: echo -n '{{user_password}}' | base64
2] SMTP mail server commands - every command in one line
auth login
{{user_name__hash}}
{{user_password__hash}}
helo {{server_name}}
mail from: <{{message_from}}>
rcpt to: <{{message_to}}>
DATA
from: <{{message_from}}>
to: <{{message_to}}>
subject:{{message_subject}}
Content-Type: text/html; charset='UTF-8'; Content-Transfer-Encoding: base64;
MIME-Version: 1.0
{{message_content}}
.
quit
Try this:
telnet smtp.gmail.com 587
gmail uses an encrypted connection. So, even after you establish a connection, you wont be able to send any email. The encryption is a little complex to manage. Try using openssl instead.
The thread below should help-
How to send email using simple SMTP commands via Gmail?