Click here to Skip to main content
       

Visual Basic

 
GeneralRe: Getting All Logged On Users and IP VB.net PinmemberDinoRondelly12-Nov-12 4:55 
GeneralRe: Getting All Logged On Users and IP VB.net PinmvpDave Kreskowiak12-Nov-12 5:55 
GeneralRe: Getting All Logged On Users and IP VB.net PinmemberDinoRondelly12-Nov-12 6:11 
GeneralRe: Getting All Logged On Users and IP VB.net PinmvpDave Kreskowiak12-Nov-12 6:46 
AnswerRe: Getting All Logged On Users and IP VB.net [modified] PinmemberDinoRondelly12-Nov-12 8:05 
GeneralRe: Getting All Logged On Users and IP VB.net PinmvpDave Kreskowiak12-Nov-12 10:02 
QuestionModule error> PLEASE HELP! Pinmemberleashim11-Nov-12 13:57 
AnswerRe: Module error> PLEASE HELP! PinmvpDave Kreskowiak11-Nov-12 17:08 
QuestionPizza order form PinmemberRitchie Vasquez11-Nov-12 5:59 
AnswerRe: Pizza order form PinmvpRichard MacCutchan11-Nov-12 6:21 
Questioncheck smtp connection before sending ? Pinmemberalejx9-Nov-12 9:02 
AnswerRe: check smtp connection before sending ? PinmvpDave Kreskowiak9-Nov-12 9:52 
GeneralRe: check smtp connection before sending ? Pinmemberalejx9-Nov-12 13:47 
GeneralRe: check smtp connection before sending ? PinmvpDave Kreskowiak9-Nov-12 14:15 
If you give the Connect method an invalid hostname and port that cannot be connected, it'll throw a SocketException with the error code in it.
 
if the hostname is a real server but nothing is listening on 25, it'll throw a SocketException.
 
If the hostname is real and 25 is blocked by a firewall, you'll get a SocketException.
 
Sooo... what's with the lonely little "throw" statement? Remove that and your code will work. That is, assuming that the SMTP server is listening on port 25...
 

The problem with this code is that you're only testing the server connection, not the ability to send email. Just because the server responds to a connection request does not mean that the credentials given for the SMTP account to send an email will work.
 
That's why I said the best way to check is to actually send an email.

QuestionAllow a Desktop app to check for JavaScript errors on given URL? Pinmemberpogowolf9-Nov-12 6:17 
QuestionUsing large XML dataset efficiently PinmemberDisIsHoody7-Nov-12 8:16 
AnswerRe: Using large XML dataset efficiently PinmemberDavid Mujica7-Nov-12 9:10 
Questionvb.net Web Browser Control! how to automate when web page is using frames. PinmemberKieran Sloan7-Nov-12 4:27 
AnswerRe: vb.net Web Browser Control! how to automate when web page is using frames. PinmemberZaf Khan26-Nov-12 2:13 
QuestionHelp with Error Message PinmemberGeorgieMPorgie5-Nov-12 3:32 
AnswerRe: Help with Error Message PinmentorWayne Gaylard5-Nov-12 4:05 
GeneralRe: Help with Error Message PinmemberGeorgieMPorgie5-Nov-12 5:03 
GeneralRe: Help with Error Message PinmentorWayne Gaylard5-Nov-12 18:31 
QuestionUse Reportvier to Show Table with Unknown Number of Columns PinmemberMember 76634803-Nov-12 15:03 
AnswerRe: Use Reportvier to Show Table with Unknown Number of Columns PinmvpDave Kreskowiak4-Nov-12 4:25 
AnswerRe: Use Reportvier to Show Table with Unknown Number of Columns PinmemberMycroft Holmes4-Nov-12 11:54 
QuestionHow can i retrieve image to pictureBox ? Pinmemberheinhtataung1-Nov-12 18:04 
AnswerRe: How can i retrieve image to pictureBox ? PinmemberEddy Vluggen2-Nov-12 0:57 
AnswerRe: How can i retrieve image to pictureBox ? PinmemberSZLMCL6-Nov-12 23:20 
QuestionHow can i save image in my N-tier application? Pinmemberheinhtataung31-Oct-12 20:20 
AnswerRe: How can i save image in my N-tier application? PinmemberEddy Vluggen1-Nov-12 3:05 
QuestionAI program PinmemberCasey Edison31-Oct-12 5:04 
AnswerRe: AI program PinmemberSimon_Whale31-Oct-12 5:08 
GeneralRe: AI program PinmemberCasey Edison31-Oct-12 5:13 
AnswerRe: AI program PinmvpRichard MacCutchan31-Oct-12 7:59 
GeneralRe: AI program PinmemberCasey Edison31-Oct-12 12:26 
GeneralRe: AI program PinmvpRichard MacCutchan31-Oct-12 23:18 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 0:42 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 2:06 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 8:14 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 8:19 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 12:40 
GeneralRe: AI program PinmvpRichard MacCutchan1-Nov-12 14:55 
GeneralRe: AI program PinmemberCasey Edison1-Nov-12 8:15 
GeneralRe: AI program PinmemberEddy Vluggen2-Nov-12 1:08 
QuestionHow to INSERT multiple rows of data to sql table? Pinmemberzaimah31-Oct-12 1:28 
AnswerRe: How to INSERT multiple rows of data to sql table? PinmemberEddy Vluggen31-Oct-12 2:11 
GeneralRe: How to INSERT multiple rows of data to sql table? Pinmemberzaimah31-Oct-12 2:28 
GeneralRe: How to INSERT multiple rows of data to sql table? PinmemberEddy Vluggen31-Oct-12 2:48 
GeneralRe: How to INSERT multiple rows of data to sql table? [modified] Pinmemberzaimah31-Oct-12 3:01 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.


Advertise | Privacy | Mobile
Web01 | 2.8.140827.1 | Last Updated 29 Aug 2014
Copyright © CodeProject, 1999-2014
All Rights Reserved. Terms of Service
Layout: fixed | fluid