Skip to main content

Unable to send email using SMTP Server (Failure sending mail error)

You can configure the SMTP server or can use Gmail SMTP to send email. But sometime you face the error read as ‘Failure sending mail.’, though you have added correct configuration and code to send email is correct. And then you wonder what went wrong due to which email not sent to recipient.

Exception Detail and Reason:
If you check the exception details then it read like:
An attempt was made to access a socket in a way forbidden by its access permissions 173.194.79.108:587

This issue may be due to firewall or Antivirus blocking your port to send mail.

Solution:
Disable Firewall or Antivirus which is blocking port to send mail. If you are using McAfee then unblock McAfee port blocking for outgoing SMTP mail as mentioned below:

·         Go to system tray and right click on McAfee icon and select VirusScan Console
·         Right click on Access Protection and select Properties.
·         Go to Anti-virus Standard Protection and uncheck the Block check against rule ‘Prevent mass mailing worms from sending mail’ and then click on Apply.
·         Now test to confirm that issue resolved or not.

Note: If you are using any other Antivirus, steps may be different but whole idea is to unblock the rule that is blocking outgoing SMTP mails.
Labels:

Comments

  1. DedicatedHosting4uMay 24, 2019 at 6:31 PM

    This is really a wonderful post. Firstly, i'd prefer to many thanks for golf shot stress on however connection plays a giant role in hosting side. Fantastic stuff.

    Dedicatedhosting4u.com

    ReplyDelete

Post a Comment

Popular posts from this blog

Error 405 : ASP.NET Core Web API PUT and DELETE Methods not allowed

Recently, while working with .Net core API I came across the issue of “Error 405 — Methods not Allowed” After some research, I found out that both GET and POST requests working fine but neither PUT nor DELETE requests working. Another thing is that the PUT and DELETE request was also working fine on my local machine but failed when we host on our Azure server. When I explored the issue on the web it led me to the conclusion that WebDAVModule seems to set PUT and DELETE request methods disabled by default and due to that PUT and DELETE throw 405 errors. To make the PUT and DELETE requests work, we need to override the WebDAVModule setting in web.config file by adding the below settings under “ system.webServer ”. < system.webServer >   < modules runAllManagedModulesForAllRequests = " false " >     < remove name = " WebDAVModule " />   </ modules > </ system.webServer > There may be 2 web.config files in y...
Post a Comment
Read more

C#: Merging Excel cells with NPOI HSSFWorkbook

In this post we’ll see how to merge the two or more cell with each other while creating the excel sheet using NPOI . Mentioned below is code to merge multiple cells, in this example we are merging first cell to fifth cell of first row (you can adjust row or cell range by passing particular parameters in CellRangeAddress). //Created new Workbook var hwb = new NPOI.HSSF.UserModel. HSSFWorkbook (); //Create worksheet with name. var sheet = hwb.CreateSheet( "new sheet" ); //Create row and cell. var row = sheet.CreateRow(0); var cell = row.CreateCell(0); ; //Set text inside cell cell.SetCellValue( "This is Merged cell" ); cell.CellStyle.WrapText = true ; //define cell range address // parameters: -> first row to last and first cell to last cell var cra = new NPOI.SS.Util. CellRangeAddress (0, 0, 0, 4); //Add merged region to sheet. sheet.AddMergedRegion(cra); Hope this solution helps you J
4 comments
Read more

How to set Swagger as the default start page for API hosted on the Azure web app?

I created an Asp.Net Core 2.x Web API and configured Swagger on it, below is the code added in Configure method under Startup.cs file, for full swagger configuration, check here //Add swagger configuration app.UseSwagger(); app.UseSwaggerUI(c => {     c.SwaggerEndpoint( "../swagger/v1/swagger.json" , "Test API V1" ); }); On my local machine when I run the API it is automatically redirected to the Swagger page. However, when I hosted this API as an Azure web app it is not redirecting directly to the Swagger and to access the swagger, I had to append /swagger in the URL, for example, https://testapi.azurewebsites.net/swagger/ Solution: Set RoutePrefix to string.Empty under app.UseSwaggerUI like below: app.UseSwaggerUI(c => {     c.SwaggerEndpoint( "../swagger/v1/swagger.json" , "Test API V1" );      c.RoutePrefix = string .Empty; // Set Swagger UI at apps root }); And that’s it, now when you b...
Post a Comment
Read more