How To Repair Smtp Syntax Error Command Unrecognized Tutorial

Home > Syntax Error > Smtp Syntax Error Command Unrecognized

Smtp Syntax Error Command Unrecognized


I'm not sure if it is '' or something else but the error is pretty straight forward. I've also confirmed that SMTP is turned on and IMAP/POP3 is turned off. if you mean username & password ,both of them are right. How to handle unintentional innuendos I have a black eye. navigate here

Reference : share|improve this answer answered Jul 31 '15 at 18:56 Roshan 112 When I use the IP I get refused. This alternate connection method using SSL is not currently supported." SmtpClient.EnableSsl Property: Sorry for not bringing any good news, but sometimes it is better to know that something simply will Code: protected void Button1_Click(object sender, EventArgs e) { MailMessage mm = new MailMessage(); SmtpClient smtp = new SmtpClient(); mm.From = new MailAddress("[email protected]"); mm.To.Add(new MailAddress("[email protected]")); mm.To.Add(new MailAddress("[email protected]")); mm.Subject = "Hello"; mm.Body = share|improve this answer answered Aug 1 '15 at 23:08 Darsithis 486 add a comment| up vote 0 down vote Try setting SMTP mail server IP address in your mail sending code.

"syntax Error Command Unrecognized. The Server Response Was" Gmail

They now need more and more expensive clerks even though they call them "Developers" or "Programmers." Reply With Quote Quick Navigation ASP.NET Top Site Areas Settings Private Messages Subscriptions Who's Online When I use the name, I get "System.Net.Mail.SmtpException: Failure sending mail. ---> System.Net.WebException: The operation has timed out. I have connection with telnet now C:\Users\Student>telnet 25 then it brought me here: 220 ESMTP c8si3296343qgc.94 - gsmtp I then type helo to make sure I'm connected which I What do you mean by SMTP authentication?

Some programmers choose to declare these values and pass it off as variables. Have you looked into the information that you need to send email via Yahoo? This connection method is sometimes called SMTP/SSL, SMTP over SSL, or SMTPS and by default uses port 465. Gmail Enable Smtp Try sending this message again.

So i assume the built-in SmtpClient class is not very useful since you can't send emails from servers that use smtps...Obviously i should write my own smtp client class or looking Thursday, July 22, 2010 2:51 PM Reply | Quote 0 Sign in to vote Hm, actually SmtpClient cannot send mail through too. Join Now Multiple users are receiving NDRs when sending to some addresses.  The addresses are usually to companies as opposed to major providers such as Outlook, Gmail, Comcast, etc.  If I So the built-in SmtpClient class is almost useless, i mean yahoo is like the most popular email service provider.

Why was Washington State an attractive site for aluminum production during World War II? I can connect to the FTP server remotely using the Microsoft command prompt FTP commands or using Windows Explorer. at System.Net.Mail.SmtpConnection.ConnectAndHandshakeAsyncResul‌t.End(IAsyncResult result) at System.Net.Mail.SmtpClient.ConnectCallback(IAsyncResult result)" –Darsithis Jul 31 '15 at 19:12 If you IP is getting refused that means it is not registered to send mail to that Remember, our SMTP server requires that you log in first before it will send out the email.

  • Save the Rule and Apply the rule, then test. 0 This discussion has been inactive for over a year.
  • The problem appear only when I establish a session from the internet!!!
  • Begg" Subject: Board Meeting Thread-Topic: Board Meeting Thread-Index: Ac5cdl3BbhKn8RIWRouuauOgH3Julg== Date: Wed, 29 May 2013 14:10:37 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [] Content-Type: multipart/alternative; boundary="_000_AAF1C076E8BBF2499D362F8554722C6FB2F359CMEX10ColoradoMan_" MIME-Version: 1.0
  • Marcel Proposed as answer by s3rvy Thursday, July 22, 2010 3:37 PM Marked as answer by Alan_chenModerator Wednesday, July 28, 2010 8:22 AM Unmarked as answer by Alan_chenModerator Wednesday, July 28,
  • The Port that hasbeen suplied to me is incoreect or the Credentials are not Correct.
  • So can please someone tell me how can I do that.
  • I started a separate thread - - because I thought it strange that the ETRN SMTP verb is being denied by Untangle when connected from the mail server LAN side
  • In this mode, the SMTP session begins on an unencrypted channel, then a STARTTLS command is issued by the client to the server to switch to secure communication using SSL.
  • Did Salesforce recently update their aura library?

500 Syntax Error Command Unrecognized Smtp

at System.Net.Mail.SmtpConnection.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpTransport.GetConnection(String host, Int32 port) at System.Net.Mail.SmtpClient.GetConnection() at System.Net.Mail.SmtpClient.Send(MailMessage message) at _Default.SendEmail(String from, String to, String cc, Int32 port, String subject, String message, String Host) in click for more info No errors but doesn not get received. "syntax Error Command Unrecognized. The Server Response Was" Gmail The server response was: at System.Net.Mail.SmtpConnection.ConnectAndHandshakeAsyncResult.End(IAsyncResult result) at System.Net.Mail.SmtpClient.ConnectCallback(IAsyncResult result) May I cite from the documentation: "The SmtpClient class only supports the SMTP Service Extension for Secure SMTP over Transport Layer Syntax Error, Command Unrecognized. The Server Response Was: 5.3.3 Unrecognized Command However, when attempting to connect using the FileZilla FTP client, I get the following:Code:Response: 230 Logged onStatus: ConnectedStatus: Retrieving directory listing...Command: PWDResponse: 257 "/" is current directory.Command:

Somehow the space after the colon became accepted by a lot of servers and used by a lot of clients in spite of being unjustifiable by anything in the specification. check over here See Daniel Bagley's Blog: System.Net.Mail with SSL to authenticate against port 465 Marcel Marked as answer by Alan_chenModerator Wednesday, July 28, 2010 8:22 AM Monday, July 26, 2010 9:06 PM Specialization in Graphic Design - niche vs. What does it mean0Server does not support secure connection1A call to SSPI failed, see inner exception. ---> System.ComponentModel.Win32Exception: The specified data could not be decrypted0System.Net.Mail.SmtpException - But the email still sends1Connection The Server Response Was: 5.5.1 Authentication Required.

Should non-native speakers get extra time to compose exam answers? Marcel Marked as answer by Alan_chenModerator Wednesday, July 28, 2010 8:22 AM Friday, July 23, 2010 3:08 PM Reply | Quote 0 Sign in to vote Hi Vendir, Just one more Browse other questions tagged c# email or ask your own question. his comment is here Thread Status: Not open for further replies.

Check with the Mail Server (Admin team) whether it accepts the request from your server (your server IP address). –Roshan Aug 1 '15 at 7:47 I'm not sure what All Rights Reserved. The email server will have a different IP address.


You don't the SMTP helper on the ASA because untangle does all that and more. The server response was '' up vote 2 down vote favorite I've looked at 3 or 4 questions here so far and they haven't helped yet. Do you have Firewall rules? 10-07-2009,09:19 PM #5 dmorris Untangle Junkie Join Date Nov 2006 Location San Carlos, CA Posts 15,171 definitely check kugoo and xunlei in protocol control Attention: Support If someone can help??

in an active directory domain name Why is every address in a micro-controller only 8 bits in size? The server response was: Dovecot ready.] System.Net.Mail.SmtpConnection.GetConnection(ServicePoint servicePoint) +2176152 System.Net.Mail.SmtpClient.Send(MailMessage message) +2188821 Novitiate.fa.Register.btnLogin_Click(Object sender, EventArgs e) +2948 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +154 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3707 share|improve this question asked May to that IP address). I've also re-created the domain in Smartermail and made sure SMTP is turned on, authentication is required, SSL is not, POP and IMAP are turned off, and that my login is

You get something like: [Email] System.Net.Mail.SmtpException: Syntax error, command unrecognized.