protected void Button1_Click(object sender, System.EventArgs e)
{
emailvalidator1.ValidationLevel = (EmailValidationLevel)StringUtils.StrToIntDef(cbLevel.Text, 0);
emailvalidator1.DnsServer = edtDNS.Text;
emailvalidator1.BlackList = StringUtils.GetStringArray(edtBlackList.Text);
EmailValidationResult result = emailvalidator1.Validate(edtEmail.Text);
switch (result)
{
case EmailValidationResult.BlacklistOk: edtResult.Text = "Blacklist passed"; break;
case EmailValidationResult.SyntaxOk: edtResult.Text = "Syntax valid"; break;
case EmailValidationResult.DomainOk: edtResult.Text = "Domain valid"; break;
case EmailValidationResult.SmtpOk: edtResult.Text = "Email exchanger valid"; break;
case EmailValidationResult.MailboxOk: edtResult.Text = "Mailbox valid"; break;
default: edtResult.Text = "E-mail invalid"; break;
}
}
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <param name="result"></param>
/// <returns></returns>
/// <exception cref="EmailValidatorException"></exception>
public bool Validate(string email, out EmailValidationResult result)
{
if (string.IsNullOrWhiteSpace(email))
{
result = EmailValidationResult.AddressIsEmpty;
return true;
}
email = email.Trim();
MailAddress mailAddress = null;
try
{
mailAddress = new MailAddress(email);
}
catch (ArgumentNullException e)
{
result = EmailValidationResult.AddressIsEmpty;
return true;
}
catch (ArgumentException e)
{
result = EmailValidationResult.AddressIsEmpty;
return true;
}
catch (FormatException e)
{
result = EmailValidationResult.InvalidFormat;
return true;
}
if (mailAddress.Address != email)
{
result = EmailValidationResult.InvalidFormat;
return true;
}
//////////////////
DomainName domainName = DomainName.Parse(mailAddress.Host);
DnsMessage dnsResponse = DnsClient.Default.Resolve(domainName, RecordType.Mx);
IList<MxRecord> mxRecords = dnsResponse.AnswerRecords.OfType<MxRecord>().ToList();
if (mxRecords.Count == 0)
{
result = EmailValidationResult.NoMailForDomain;
return true;
}
foreach (MxRecord mxRecord in mxRecords)
{
try
{
SmtpClient smtpClient = new SmtpClient(mxRecord.ExchangeDomainName.ToString());
SmtpStatusCode resultCode;
if (smtpClient.CheckMailboxExists(email, out resultCode))
{
switch (resultCode)
{
case SmtpStatusCode.Ok:
result = EmailValidationResult.OK;
return true;
case SmtpStatusCode.ExceededStorageAllocation:
result = EmailValidationResult.MailboxStorageExceeded;
return true;
case SmtpStatusCode.MailboxUnavailable:
result = EmailValidationResult.MailboxUnavailable;
return true;
}
}
}
catch (SmtpClientException)
{
}
catch (ArgumentNullException)
{
}
}
if (mxRecords.Count > 0)
{
result = EmailValidationResult.MailServerUnavailable;
return false;
}
result = EmailValidationResult.Undefined;
return false;
}
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <param name="result"></param>
/// <returns></returns>
/// <exception cref="EmailValidatorException"></exception>
public bool Validate(string email, out EmailValidationResult result)
{
if (string.IsNullOrWhiteSpace(email))
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
email = email.Trim();
MailAddress mailAddress = null;
try
{
mailAddress = new MailAddress(email);
}
catch (ArgumentNullException e)
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
catch (ArgumentException e)
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
catch (FormatException e)
{
result = EmailValidationResult.InvalidFormat;
return(true);
}
if (mailAddress.Address != email)
{
result = EmailValidationResult.InvalidFormat;
return(true);
}
//////////////////
DomainName domainName = DomainName.Parse(mailAddress.Host);
DnsMessage dnsResponse = DnsClient.Default.Resolve(domainName, RecordType.Mx);
IList <MxRecord> mxRecords = dnsResponse.AnswerRecords.OfType <MxRecord>().ToList();
if (mxRecords.Count == 0)
{
result = EmailValidationResult.NoMailForDomain;
return(true);
}
foreach (MxRecord mxRecord in mxRecords)
{
try
{
SmtpClient smtpClient = new SmtpClient(mxRecord.ExchangeDomainName.ToString());
SmtpStatusCode resultCode;
if (smtpClient.CheckMailboxExists(email, out resultCode))
{
switch (resultCode)
{
case SmtpStatusCode.Ok:
result = EmailValidationResult.OK;
return(true);
case SmtpStatusCode.ExceededStorageAllocation:
result = EmailValidationResult.MailboxStorageExceeded;
return(true);
case SmtpStatusCode.MailboxUnavailable:
result = EmailValidationResult.MailboxUnavailable;
return(true);
}
}
}
catch (SmtpClientException)
{
}
catch (ArgumentNullException)
{
}
}
if (mxRecords.Count > 0)
{
result = EmailValidationResult.MailServerUnavailable;
return(false);
}
result = EmailValidationResult.Undefined;
return(false);
}
/// <summary>
///
/// </summary>
/// <param name="email"></param>
/// <param name="result"></param>
/// <returns></returns>
/// <exception cref="EmailValidatorException"></exception>
public bool Validate(string email, out EmailValidationResult result)
{
if (string.IsNullOrWhiteSpace(email))
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
email = email.Trim();
MailAddress mailAddress = null;
try
{
mailAddress = new MailAddress(email);
}
catch (ArgumentNullException e)
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
catch (ArgumentException e)
{
result = EmailValidationResult.AddressIsEmpty;
return(true);
}
catch (FormatException e)
{
result = EmailValidationResult.InvalidFormat;
return(true);
}
if (mailAddress.Address != email)
{
result = EmailValidationResult.InvalidFormat;
return(true);
}
//////////////////
LookupClient dnsClient = new LookupClient()
{
UseTcpOnly = true
};
var mxRecords = dnsClient.Query(mailAddress.Host, QueryType.MX).AllRecords.MxRecords().ToList();
if (mxRecords.Count == 0)
{
result = EmailValidationResult.NoMailForDomain;
return(true);
}
foreach (MxRecord mxRecord in mxRecords)
{
try
{
SmtpClient smtpClient = new SmtpClient(mxRecord.Exchange.Value);
SmtpStatusCode resultCode;
if (smtpClient.CheckMailboxExists(email, out resultCode))
{
switch (resultCode)
{
case SmtpStatusCode.Ok:
result = EmailValidationResult.OK;
return(true);
case SmtpStatusCode.ExceededStorageAllocation:
result = EmailValidationResult.MailboxStorageExceeded;
return(true);
case SmtpStatusCode.MailboxUnavailable:
result = EmailValidationResult.MailboxUnavailable;
return(true);
}
}
}
catch (SmtpClientException)
{
}
catch (ArgumentNullException)
{
}
}
if (mxRecords.Count > 0)
{
result = EmailValidationResult.MailServerUnavailable;
return(false);
}
result = EmailValidationResult.Undefined;
return(false);
}