sending the email using gmail smtp - unable to connect the remote server

Question

I tried to send mail using Windows application in C#. I got code as below and tried but it is not working

It giving following error:

Unable to connect the remove server

Code:

MailAddress sendd = new  MailAddress("xxxxxx@gmail.com","Sethu",Encoding.UTF8);
MailAddress receivee = new MailAddress("xxxxxx@yahoo.com");
MailMessage mail = new MailMessage(sendd, receivee);
SmtpClient client = new SmtpClient();
client.Port = 587;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential("xxxxxx@gmail.com", "yyyyyyy");
mail.Subject = "this is a test email.";
mail.Body = "this is my test email body";
client.Send(mail);

Anyone help to find out what mistake i did?

check this NetworkCredential("xxxxxx@gmail.com", "yyyyyyy"); email where you have receive email for google or yahoo for allow access for sending email to other — Nazir Ullah, Jun 23 '16 at 09:18
it seem you have no rights to send mail from this credential — Nazir Ullah, Jun 23 '16 at 09:18
@NazirUllah how can I find that I dont have rights to send mail? — Sethu Raman, Jun 23 '16 at 09:31
yes, Sorry didn't see it. try to change port - Use port 465 instead. — Rahul Hendawe, Jun 23 '16 at 09:39
first login to the account mail from where you sending the email , check whether you receive any Warning mail or not — Nazir Ullah, Jun 23 '16 at 10:20
account mail i means this .NetworkCredential("xxxxxx@gmail.com", "yyyyyyy"); — Nazir Ullah, Jun 23 '16 at 10:21
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/115392/discussion-between-sethu-raman-and-nazir-ullah). — Sethu Raman, Jun 23 '16 at 10:29
I found message in inner exception "Message=An attempt was made to access a socket in a way forbidden by its access permissions 74.125.200.109:25" — Sethu Raman, Jun 23 '16 at 10:30

score 0 · Answer 1 · answered Jun 23 '16 at 09:17

0

can you try make your code to something like the following

 var smptClient = new SmtpClient("smtp.gmail.com", 587)
 {
     Credentials = new NetworkCredential("smit123@gmail.com", "123456789"),
     EnableSsl = true
 };
  smptClient.Send("smit123@gmail.com", "test@gmail.com", "Testing Email", "testing the email");

This code is properly tested with my own account on the Network..

answered Jun 23 '16 at 09:17

Smit Patel

2,992
1
26
44

Everything is correct in code. Is there any issue with rights or need to change any smtp settings. – Sethu Raman Jun 23 '16 at 10:17
So may be the issue is in your `NetworkCredentials`, Please check those configuration first, as your code is working perfect – Smit Patel Jun 23 '16 at 12:13

score 0 · Answer 2 · edited May 23 '17 at 12:16

0

Following code works for me

var client = new SmtpClient("smtp.gmail.com", 587)
{
    Credentials = new NetworkCredential("xxxxxx@gmail.com", "yyyyyyy"),
    EnableSsl = true
};
client.Send("myusername@gmail.com", "myusername@gmail.com", "this is a test email.", "this is my test email body");

which is pretty much the same as yours with the difference that it doesn't use MailMessage object. This might not be the problem, but you could give it a try.

I would also check if you have port 587 enable on your server

You should also go through this topic where you find lots of useful tips

edited May 23 '17 at 12:16

Community

1
1

answered Jun 23 '16 at 09:18

Václav Holuša

311
3
14

And if you try to connect to any other SMTP server using this port? It could bey denied on the firewall. – Václav Holuša Jun 23 '16 at 10:28
I found message in inner exception "Message=An attempt was made to access a socket in a way forbidden by its access permissions 74.125.200.109:25" – Sethu Raman Jun 23 '16 at 10:30
Is it server or dev machine? are you able to tomporarily disable firewall just to test it's going through? – Václav Holuša Jun 23 '16 at 12:38
It is devlp machine. I tried that too also by disabling firewall and all antivirus – Sethu Raman Jun 23 '16 at 12:46

sending the email using gmail smtp - unable to connect the remote server

2 Answers2