Can we use gmail account to send email in asp.net website from *localhost * (local machine) ? I am trying but badly unsuccessful. It works fine on hosting but donot work on my machine.
I have windows server 2003 on my machine, I have added port 587 and 465 in firewall in exceptions. In my gmail account I also have enabled POP and IMAP. Some people suggest to use port 465 and others say port 587 should be used. I tried both and below was my result:
Using port 465 it take time and finally give message that the opration has timed out. falure
Using port 587 it dont take time, show message "failuer sending email" with an inner expection "No connection could be made because the target machine actively refused it 72.14.213.109:587"
Below is my code, please guide me where I am wrong or what I should do.
thanks
public static bool SendMail(string gMailAccount, string password, string to, string subject, string message)
{
try
{
NetworkCredential loginInfo = new NetworkCredential(gMailAccount, password);
MailMessage msg = new MailMessage();
msg.From = new MailAddress(gMailAccount);
msg.To.Add(new MailAddress(to));
msg.Subject = subject;
msg.Body = message;
msg.IsBodyHtml = true;
SmtpClient client = new SmtpClient("smtp.gmail.com");
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Credentials = loginInfo;
client.Port = 587;
client.Send(msg);
return true;
}
catch (Exception e)
{
return false;
}
}
I use smtp.yandex.com. May be need change settings in your gmail account.
Try this firs: add:
client.DeliveryMethod = SmtpDeliveryMethod.Network;
If that does not help, your mailaddress might not be complete, use
var fromAddress = new MailAddress("from#gmail.com", "From Name");
and in the credentials use
Credentials = new NetworkCredential(fromAddress.Address, ....
Hope that helps
This SmtpClient has always worked for me:
new SmtpClient
{
Host = "smtp.gmail.com",
Port = 587,
EnableSsl = true,
UseDefaultCredentials = false,
Credentials = new NetworkCredential("noreply#my_domain.com", "password")
};
And it matches yours.
Have you been able to contact smtp.gmail.com on port 587 through any other app? Telnet on that port maybe? Am thinking it's probably a network issue, although you did state that your firewall was wide open it's not the only hop between you and google.
Related
I'm developing a third-party add-on to run in a program called M-Files.
The purpose of the add-on is to send a mail with the help of an SMTP server. I created a fake SMTP server in DevelMail.com just for testing.
Testing the SMTP server from a browser works but when i run the code it gives me the following error.
Transaction failed. The server response was: 5.7.1 Client host rejected: Access denied
Here are the SMTP information:
Host: smtp.develmail.com
SMTP Port: 25
TLS/SSL Port: 465
STARTTLS Port : 587
Auth types: LOGIN, CRAM-MD5
Here is the code:
MailAddress adressFrom = new MailAddress("notification#mfiles.no", "M-Files Notification Add-on");
MailAddress adressTo = new MailAddress("majdnakhleh#live.no");
MailMessage message = new MailMessage(adressFrom, adressTo);
message.Subject = "M-Files Add-on running";
string htmlString = #"<html>
<body>
<p> Dear customer</p>
<p> This is a notification sent to you by using a mailadress written in a metadata property!.</p>
<p> Sincerely,<br>- M-Files</br></p>
</body>
</html>
";
message.Body = htmlString;
SmtpClient client = new SmtpClient();
client.Host = "smtp.develmail.com";
client.Port = 587;
client.Credentials = new System.Net.NetworkCredential("myUserName", "myPassword");
client.EnableSsl = true;
client.Send(message);
Reason for the Issue:
Usually, email sending option using SMTP encountered Access denied
because there should have a sender email which required to allow
remote access. When SMTP request sent from the sender email
it checks whether there is remote access allowed. If no, then you
always got Access denied message.
Solution:
For example let's say, you want to send email using Gmail SMTP in that case you do have to enable Allow less secure apps: ON
How To Set
You can simply browse this link Less secure app access and turn that to ON
See the screen shot
Code Snippet:
public static object SendMail(string fromEmail, string toEmail, string mailSubject, string mailBody, string senderName, string senderPass, string attacmmentLocationPath)
{
try
{
MailMessage mail = new MailMessage();
//Must be change before using other than gmail smtp
SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
mail.From = new MailAddress(fromEmail);
mail.To.Add(toEmail);
mail.Subject = mailSubject;
mail.Body = mailBody;
mail.IsBodyHtml = true;
SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential(senderName, senderPass);//Enter the credentails from you have configured earlier
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
return true;
}
catch (Exception ex)
{
return ex;
}
}
Note: Make sure, fromEmail and (senderName, senderPass) should be same email with the credential.
Hope that would help.
I see many posts on SMTPClient but I'm still stuck.
I am creating a C# Console application targeting the .NET 4.0 framework and running on a Windows 2008 R2 Datacenter (server).
I want send an email using SSL from a gmail account I just created.
If I use port 587, I get an exception:
The SMTP server requires a secure connection or the client was not authenticated
If I use port 465, I get another one:
Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall.
I realize this question has been asked several times in the past. All answers I see relate to the order in which UseDefaultCredentials is set. It must be set to false BEFORE the real credentials are set. I have followed this advice (as per the code below) and yet I still get a failure.
Other answers include switching ports from 465 to 587... which i have tried and just results in a different error (as stated above).
Here's my code:
NetworkCredential credentials = new NetworkCredential("something#gmail.com", "2-step-auth-Password");
MailAddress address = new MailAddress("something#gmail.com");
SmtpClient client = new SmtpClient("smtp.gmail.com", 465); // or 587
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.EnableSsl = true;
client.Credentials = credentials;
client.Timeout = 10000; // 10 seconds.
client.Host = "smtp.gmail.com";
//client.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback);
MailMessage message = new MailMessage("example#gmail.com", recipients);
message.Subject = "Hello";
message.Body = "Goodbye";
message.BodyEncoding = Encoding.UTF8;
try
{
client.Send(message);
}
catch (Exception ex)
{
Console.WriteLine("Exception caught in CreateTestMessage2(): {0}", ex.ToString());
}
message.Dispose();
Update 2: I see another answer which may be my issue: gmail requires an application-specific password (which is apparently not available with my current gmail account. not sure why yet). but this may be my issue.
Update 3: I have followed all instructions. Generated 2-step authentication with Gmail, and still fails.
Below code works for me, you can try this:
SmtpClient smtp = new SmtpClient("smtp.office365.com");
//Your Port gets set to what you found in the "POP, IMAP, and SMTP access" section from Web Outlook
smtp.Port = 587;
//Set EnableSsl to true so you can connect via TLS
smtp.EnableSsl = true;
System.Net.NetworkCredential cred = new System.Net.NetworkCredential("Username", "Password");
smtp.Credentials = cred;
MailMessage mail = new MailMessage();
mail.From = new MailAddress("Sender Email Address", "Sender Name");
StringBuilder mailBody = new StringBuilder();
mail.To.Add("ToEmailAddress");
mail.Subject = "Subject";
mail.IsBodyHtml = true;
mail.Body = "Body Text";
try
{
smtp.Send(mail);
}
catch (Exception ex)
{
}
I've been struggeling a lot with this now.
I try to send mail with my mvc application using my google apps account. But I keep getting errors. It doesn't matter which settings I use. I tried using both port 465 and 587 with ssl and authentication turned on. With 465 I get Operation Timed Out and with 587 I get this message:
The SMTP server requires a secure connection or the client was not
authenticated. The server response was: 5.5.1 Authentication Required
I tried turning of the firewall with no luck. I have also tried to turn off 2-step authentication but I figured out that it wasn't even turned on.
I hope that you can help me
Regards
Here is the code as requested:
public static void SendMail(MailAddress from, MailAddress to, string subject, string body) {
MailMessage mail = new MailMessage();
mail.From = from;
mail.To.Add(to);
mail.Subject = subject;
mail.Body = body;
SmtpClient client;
if (Settings.Port != null)
client = new SmtpClient(Settings.Host, Int32.Parse(Settings.Port));
else
client = new SmtpClient(Settings.Host);
client.EnableSsl = Settings.UseSSL;
client.Timeout = 50000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
if (Settings.UseAuthentication) {
client.Credentials = new NetworkCredential(Settings.Username, Settings.Password);
client.UseDefaultCredentials = false;
}
client.Send(mail);
}
I have checked all obvius stuff like username and password (username is formed like user#domain.com). I've also stepped through the code to verify my settings class is working as it should
I found out what the problem was. client.UseDefaultCredentials = false; must go before the credentials is set. Now client.Sendmethod returns without exceptions.
I'm tired to send message over SSL with SMTP by i still have an exeption :
"Operation timed out"
My questions is :
How to resolve this problem;
How to send an email behind the firewall !!!
Thanks,
public void SendMessage()
{
SmtpClient client = new SmtpClient("servername.ru.alt001.com");
client.Credentials = new NetworkCredential("ali.mselmi#server.ru","password");
client.Port = 465;
client.EnableSsl = true;
MailMessage message = new MailMessage()
{
Subject = "Test Message",
Body = "Hello, this is a test !!! Kind Regards Ali Mselmi"
};
message.To.Add("ali.mselmi#gmail.com");
message.From = new MailAddress("ali.mselmi#server.ru");
client.Send(message);
}
}
That's the point of a firewall - people can't reach a port behind it unless they're allowed to.
You'll need to contact the firewall owner/admin if indeed that's the problem.
The other possibility is that you have the wrong port number - 465 is the legacy port number for secure smtp - I believe 587 is the recommended port...
I am trying to create a web application which upon entering your email address and message , sends an email with this information from the email address.
I used this:
try
{
NetworkCredential login = new NetworkCredential("your_____#gmail.com", "password");
System.Net.Mail.MailMessage email = new System.Net.Mail.MailMessage();
email.To.Add(new MailAddress("my____email#gmail.com"));
email.From = new MailAddress("your_____#gmail.com");
email.Subject = "Question";
email.Body = question;
SmtpClient client = new SmtpClient("smtp.gmail.com");
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Credentials = login;
client.Send(email);
}
catch
{
}
But its giving me an SMTP error.
"Service not available, closing
transmission channel. The server
response was: Cannot connect to SMTP
server 209.85.129.111
(209.85.129.111:25), connect error
10051" System.Exception
{System.Net.Mail.SmtpException}
To send through your gmail account, you need to connect to port 587:
SmtpClient client = new SmtpClient("smtp.gmail.com", 587);
You do not need to specify port 587 - the code works without it. I have successfully sent and received e-mail using:
SmtpClient client = new SmtpClient("smtp.gmail.com");
If you look at the error closely, it says "Cannot connect to SMTP server" and error 10051 means the network is unreachable. Do you have a firewall blocking port 587?
Gmail uses port 465 and the erros show port 25
try using 465 port
http://mail.google.com/support/bin/answer.py?answer=76147