Verify User Login Credentials Using Gmail (or Other Email Service Provider)

Jun 9, 2010

How to verify users login credentials using users login credentials of user's gmail account (like in stackoverflow on clicking gmail it takes to gmail login page and gmail verifies the user)

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I am the web developer at a medical clinic. I have 2 scenarios going on:

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1)[C# Encyrption] On User creation, perform encryption in the Web App and submit the encrypted password to the database. To verify credentials at Login, perform the same encryption on the submitted password and ensure that it matches the value stored in the database.

2)[SQL Encryption] On User creation, submit the plain-text password to the database and have it perform one of the SQL encryption variants during INSERT. To verify credentials at Login, have the database perform decryption on the password during the SELECT statement, and compare the plain-text submitted password to the one in the database.

3)[Mix] On User creation, submit the plain-text password to the database, and have it perform one of the SQL encryption variants during INSERT. To verify credentials at Login, perform the same encryption algorithm used by SQL on the submitted password ( is this possible? ), and ensure that it matches the value stored in the database.

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Security :: Login Form Using Either User Id Or Email Or Phone Number?

Apr 20, 2010

I have to make a login form using vb.net. The login form should either accept

Username ID or

Email ID or

Phone number

---- either of one ,and match it with the password of the corresponding record in the user table.

The user table has following column:- U_ID(varchar),mail(varchar),Phone(Number),Password(Varchar)

The form has two textfields - 1. Username

2.Password

And a submit button. If combination is correct I should be redirected to the Index page.

But I don't have to scan through all the columns of the user table to match the password.

(a)If the user enters user­_id say- ID 10012 then we should be able to search only the record in the user_id column as it has alphanumeric or varchar data type and match with corresponding password.

(b)If the user enters Email id we should be able to search through the email id column as email id contains "@ and ." sign.

(c)If the user enters phone number then we should search only the phone column as it has numeric datatype.

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I am using an email address as my "username" for Login. When a user logs in the User object that is created has the Email address as the name which is incorrect. The actual name is another field in the DB. How do I login and authenticate against the email address and then load the correct name in the User object?

I am using forms authentication with a custom MembershipProvider and RoleProvider.

Edits Below to Clarify

I have a custom MembershipProvider that validates users by email address and password. It is called by the basic Login Control and registered in web.config.

[code]....

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Email Was Not Sending To Gmail Account

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while send email from asp.net code, When i am sending mail to other than gmail then its work fine , but when i try to send an email to gmail account its not working Send To : info@[URL] is my gmail account email address When i send email to info@[URL] its not working when i use another email Like Send To: awakeel@[URL] its work fine and i recieve the email

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.net - Gmail Is Filtering Web App's Email As Spam?

Jan 30, 2011

We have a business web application that periodically sends emails as reminders, links to client data, etc. Our company uses Google Apps for our email provider (with our own domain name), and the web application sends email through Google with SMTP.

The problem is that Google Apps / Gmail keeps marking the messages as spam, even for the inboxes in our domain name. No other email provider seems to mark it as spam (but of course we haven't tested them all...).

We've tried various formulations of the body test: i.e. including more contextual information, addressing the recipient by name, but so far with no apparent changes. This makes me thing it may be something about our email sending process, rather than the content of the email, that's causing the emails to be marked as spam.

Things that we tried but that didn't solve the problem:

"From" address is valid and not spoofed SPF records are correct, and show as "pass" in the email header Since we are connecting to Google's SMTP server to send email, it's not an issue with a blacklisted IP address (however, our website has a static IP address that is not blacklisted). Email is not very spammy: I've checked against several online spam filter tests, and the email body always shows up as extremely unlikely to be filtered. HTML body vs plain-text body seems to make no difference. We send a small volume of email: probably 0-10 emails per day, so I don't see how that would make this suspicious. Whenever we have access to the receiving inbox (i.e. it belongs to an employee of our company), we've been marking the emails as "not spam", since Gmail may be using communal statistics to determine spam. After a couple times this results in emails to that particular inbox getting through, but doesn't seem to help other accounts.

What else can we try?

If it makes a difference, we're sending emails using an ASP.NET site running .NET 3.5. A typical email gets sent like this:

var message = new MailMessage(new MailAddress(from), new MailAddress(to)) {
Subject = subject,
Body = body
IsBodyHtml = true
};
// SMTP details stored in web.config
new SmtpClient { EnableSsl = true }.SendAsync(message, null);

EDIT: I've seen this similar question: How to stop Gmail from marking mails sent by my web app as spam?, but the situation is a little different since we can reproduce it by sending and receiving from the same Google Apps domain. Besides, I believe I have covered all of the proposed solutions for that question.

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Gmail Recipients Cannot Receive Email From App

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I used code below to send an email from company exchange server 2010.

For all recipients there is no any problem.

But for Gmail recipients, they can not receive email from app.

Dim myMessage As New MailMessage(strFrom, strTo, strSubject, strBody)
Dim myMail As New SmtpClient("email.company.com")

myMail.Credentials = New System.Net.NetworkCredential("aspnetemail", "password")
myMail.Send(myMessage)

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Send Email To Gmail Account

Mar 25, 2014

Having problems sending email to a gmail account? In my web config I have it setup as:

Code:
<system.net>
<mailSettings>
<smtp from="xxxx" deliveryMethod="Network" >
<network host="smtp.xxxx.com" password="xxx" userName="xxx" enableSsl="false" port="25" />
</smtp>
</mailSettings>
</system.net>

This works if I send it to something like my domain, but if I try this to gmail it will give me something like "secure connection required" I've tried a few different ports. I've tried 587 and it gives me the same thing. If I turn enablessl=true ports 587 and 25 will tell me secure email no supported. If I try it on port 465 it will time out.

there's a thing called "Collaboration Data Objects for Windows 2000" using System.Web.Mail, but I don't want to do that because I'm using System.Net.Mail and microsoft also when I try and compile the CDO objects it says it's now unsupported plus it doesn't work anyway. It times out when I try this:

Code:
Dim smtpServer As String = "xxxx"
Dim userName As String = "xxx"
Dim password As String = "xxx"
Dim cdoBasic As Integer = 1

[Code] ....

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Can Send Email Using Gmail On Local Machine

Dec 27, 2010

I am using gmail in my asp.net site to send email. It is working fine on shared server but it donot send email when I run my site on local machine in visual studio. Please guide what should I do to make it sending emails from local machine as well.below is my code:

dt = systemrep.GetSystemInfo();
dr = dt.Rows[0];
From = dr["nm_EmailFrom"].ToString();
SMTP = dr["nm_SMTP"].ToString();
Port = dr["amt_Port"].ToString();
EmailId = dr["nm_emailUserId"].ToString();
[code]...

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