smtp

I am working on a project where I have to validate the given SMTP server i.e in a textbox user will provide the detail and then he will click on a test button. I want to check whether the server entered by the user is an Smtp Server or not? Any Idea?? Attempt to connect to the SMTP port, and ensure you get a line back from it that starts with "220 " and contains the letters "SMTP". A typical example response would be: 220 prod.monadic.cynic.net ESMTP Postfix (2.5.5) Then be polite and send " QUIT \r\n" to hang up. You can do some further testing, if you like, such as testing that the user can

I am trying to send an email via GMail from ASP.Net using the code and config below. Unfortunatly it doesn't seem to be working and it also isn't throwing an error message. There is nothing in the server logs or the mail IIS mail folders, I even checked the trash of the from address to see if the mail ended up there. Any help would be really appreciated. C# Section public void SendFeedback() { string emailFrom = this.Email.Text; MailMessage message = new MailMessage(); // here is an important part: message.From = new MailAddress(emailFrom, "Mailer"); // it's superfluous part here since from

I've written a component in a Windows service (C#) which is responsible for sending sometimes large volumes of emails. These emails will go to recipients on many domains – really, any domain. (Yes, the recipients want the email. No, I'm not spamming. Yes, I'm in complaince with CAN-SPAM. Yes, I'm aware sending email from code sucks .) Many of the emails are transactional (generated in response to user actions); some are bulk (mail-merges basically). I do not want to rely on an external SMTP server. (Among other considerations, the thought of having to check a mailbox for bounce messages and

This may be very trivial for you but i just couldn't figure out why am i getting this error message when i run my code. I looked some of the relative questions on this same website for eg Sending email through Gmail SMTP server with C# but none of them was helpful. Anyone willing to help please? using different assemblies are also acceptable. so if anyone got a working solution that would be appreciated. Error Message = The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at here is my code System

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have an asynchronous API which I'm using to connect and send mail to an SMTP server which has some setup and tear down to it. So it fits nicely into using a contextmanager from Python 3's contextlib . Though, I don't know if it's possible write because they both use the generator syntax to write. This might demonstrate the problem (contains a mix of yield-base and async-await syntax to demonstrate the difference between async calls and yields to the context manager). @contextmanager async def smtp_connection(): client = SMTPAsync() ... try

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: All I want is to send emails from my ruby scripts, over SMTP using SSL. I only find examples of doing it from Rails, or for Gmail with TLS. I found people talking about SMTPS support with ruby 1.8.5, but the libdoc doesn't mention it. Anyone with an example of sending mail over SMTP with SSL, on port 465? ruby - v ruby 1.8 . 7 ( 2008 - 08 - 11 patchlevel 72 ) [ i486 - linux ] 回答1: I solve this issue with this configuration below : config . action_mailer . perform_deliveries = true config . action_mailer . raise_delivery_errors =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Ok, I don't know what else to do. This code worked perfectly fine a week ago when I wrote and tested it. Then I embedded it into my program and realised I kept getting exceptions. Everything seems normal. The sender address is legit. The recipient addresses I used to test it are legit. What is wrong? I'm so frustrated: private String outgoingMailServer = "smtp.mail.yahoo.com"; boolean debug = true; //set the host outgoing mail smtp server. Properties properties = new Properties(); properties.put("mail.smtp.host", outgoingMailServer);

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have some inherited code which stores SMTP server, username, password in the system.net/mailSettings/smtp section of the Web.config. It used to read them like so: Configuration c = WebConfigurationManager.OpenWebConfiguration(HttpContext.Current.Request.ApplicationPath); MailSettingsSectionGroup settings = (MailSettingsSectionGroup)c.GetSectionGroup("system.net/mailSettings"); return settings.Smtp.Network.Host; But this was failing when I had to deploy to a medium trust environment. So following the answer from this question , I rewrote it