/// <summary>
/// This method uses the built in .NET classes to send mail.
/// </summary>
/// <param name="smtpSettings"></param>
/// <param name="from"></param>
/// <param name="replyTo"></param>
/// <param name="to"></param>
/// <param name="cc"></param>
/// <param name="bcc"></param>
/// <param name="subject"></param>
/// <param name="messageBody"></param>
/// <param name="html"></param>
/// <param name="priority"></param>
/// <param name="attachmentPaths"></param>
/// <param name="attachmentNames"></param>
public static bool Send(
SmtpSettings smtpSettings,
string from,
string replyTo,
string to,
string cc,
string bcc,
string subject,
string messageBody,
bool html,
string priority,
string[] attachmentPaths,
string[] attachmentNames)
{
if ((ConfigurationManager.AppSettings["DisableSmtp"] != null) && (ConfigurationManager.AppSettings["DisableSmtp"] == "true"))
{
log.Info("Not Sending email because DisableSmtp is true in config.");
return(false);
}
if ((smtpSettings == null) || (!smtpSettings.IsValid))
{
log.Error("Invalid smtp settings detected in SendEmail ");
return(false);
}
if (log.IsDebugEnabled)
{
log.DebugFormat("In SendEmailNormal({0}, {1}, {2}, {3}, {4}, {5}, {6}, {7})",
from,
to,
cc,
bcc,
subject,
messageBody,
html,
priority);
}
using (MailMessage mail = new MailMessage())
{
if (smtpSettings.PreferredEncoding.Length > 0)
{
switch (smtpSettings.PreferredEncoding)
{
case "ascii":
case "us-ascii":
// do nothing since this is the default
break;
case "utf32":
case "utf-32":
mail.BodyEncoding = Encoding.UTF32;
mail.SubjectEncoding = Encoding.UTF32;
break;
case "unicode":
mail.BodyEncoding = Encoding.Unicode;
mail.SubjectEncoding = Encoding.Unicode;
break;
case "utf8":
case "utf-8":
default:
mail.BodyEncoding = Encoding.UTF8;
mail.SubjectEncoding = Encoding.UTF8;
break;
}
}
MailAddress fromAddress;
try
{
fromAddress = new MailAddress(from);
}
catch (ArgumentException)
{
log.Error("invalid from address " + from);
log.Info("no valid from address was provided so not sending message " + messageBody);
return(false);
}
catch (FormatException)
{
log.Error("invalid from address " + from);
log.Info("no valid from address was provided so not sending message " + messageBody);
return(false);
}
mail.From = fromAddress;
List <string> toAddresses = to.Replace(";", ",").SplitOnChar(',');
foreach (string toAddress in toAddresses)
{
try
{
MailAddress a = new MailAddress(toAddress);
mail.To.Add(a);
}
catch (ArgumentException)
{
log.Error("ignoring invalid to address " + toAddress);
}
catch (FormatException)
{
log.Error("ignoring invalid to address " + toAddress);
}
}
if (mail.To.Count == 0)
{
log.Error("no valid to address was provided so not sending message " + messageBody);
return(false);
}
if (replyTo.Length > 0)
{
try
{
MailAddress replyAddress = new MailAddress(replyTo);
mail.ReplyTo = replyAddress;
}
catch (ArgumentException)
{
log.Error("ignoring invalid replyto address " + replyTo);
}
catch (FormatException)
{
log.Error("ignoring invalid replyto address " + replyTo);
}
}
if (cc.Length > 0)
{
List <string> ccAddresses = cc.Replace(";", ",").SplitOnChar(',');
foreach (string ccAddress in ccAddresses)
{
try
{
MailAddress a = new MailAddress(ccAddress);
mail.CC.Add(a);
}
catch (ArgumentException)
{
log.Error("ignoring invalid cc address " + ccAddress);
}
catch (FormatException)
{
log.Error("ignoring invalid cc address " + ccAddress);
}
}
}
if (bcc.Length > 0)
{
List <string> bccAddresses = bcc.Replace(";", ",").SplitOnChar(',');
foreach (string bccAddress in bccAddresses)
{
try
{
MailAddress a = new MailAddress(bccAddress);
mail.Bcc.Add(a);
}
catch (ArgumentException)
{
log.Error("invalid bcc address " + bccAddress);
}
catch (FormatException)
{
log.Error("invalid bcc address " + bccAddress);
}
}
}
mail.Subject = subject.RemoveLineBreaks();
switch (priority)
{
case PriorityHigh:
mail.Priority = MailPriority.High;
break;
case PriorityLow:
mail.Priority = MailPriority.Low;
break;
case PriorityNormal:
default:
mail.Priority = MailPriority.Normal;
break;
}
if (html)
{
mail.IsBodyHtml = true;
// this char can reportedly cause problems in some email clients so replace it if it exists
mail.Body = messageBody.Replace("\xA0", " ");
}
else
{
mail.Body = messageBody;
}
// add attachments if there are any
if ((attachmentPaths.Length > 0) && (attachmentNames.Length == attachmentPaths.Length))
{
for (int i = 0; i < attachmentPaths.Length; i++)
{
if (!File.Exists(attachmentPaths[i]))
{
log.Error("could not find file for email attachment " + attachmentPaths[i]);
continue;
}
Attachment a = new Attachment(attachmentPaths[i]);
a.Name = attachmentNames[i];
mail.Attachments.Add(a);
}
}
int timeoutMilliseconds = ConfigHelper.GetIntProperty("SMTPTimeoutInMilliseconds", 15000);
SmtpClient smtpClient = new SmtpClient(smtpSettings.Server, smtpSettings.Port);
smtpClient.EnableSsl = smtpSettings.UseSsl;
smtpClient.Timeout = timeoutMilliseconds;
if (smtpSettings.RequiresAuthentication)
{
NetworkCredential smtpCredential
= new NetworkCredential(
smtpSettings.User,
smtpSettings.Password);
CredentialCache myCache = new CredentialCache();
myCache.Add(smtpSettings.Server, smtpSettings.Port, "LOGIN", smtpCredential);
smtpClient.Credentials = myCache;
}
else
{
//aded 2010-01-22 JA
smtpClient.UseDefaultCredentials = true;
}
try
{
smtpClient.Send(mail);
//log.Debug("Sent Message: " + subject);
//log.Info("Sent Message: " + subject);
return(true);
}
catch (System.Net.Mail.SmtpException ex)
{
//log.Error("error sending email to " + to + " from " + from, ex);
log.Error("error sending email to " + mail.To.ToString() + " from " + mail.From.ToString() + ", will retry");
return(RetrySend(mail, smtpClient, ex));
}
catch (WebException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
return(false);
}
catch (SocketException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
return(false);
}
catch (InvalidOperationException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
return(false);
}
catch (FormatException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
return(false);
}
}// end using MailMessage
}
/// <summary>
/// This method uses DotNetOpenMail. DotNetOpenMail doesn't work in Medium Trust.
/// For Medium Trust use the SendMailNormal method.
/// If Web.config setting RunningInMediumTrust is true then this method delegates to SendMailNormal.
/// </summary>
/// <param name="smtpSettings"></param>
/// <param name="from"></param>
/// <param name="to"></param>
/// <param name="cc"></param>
/// <param name="bcc"></param>
/// <param name="subject"></param>
/// <param name="messageBody"></param>
/// <param name="html"></param>
/// <param name="priority"></param>
public static void SendEmail(
SmtpSettings smtpSettings,
string from,
string to,
string cc,
string bcc,
string subject,
string messageBody,
bool html,
string priority)
{
if ((ConfigurationManager.AppSettings["DisableSmtp"] != null) && (ConfigurationManager.AppSettings["DisableSmtp"] == "true"))
{
log.Info("Not Sending email because DisableSmtp is true in config.");
return;
}
if ((smtpSettings == null) || (!smtpSettings.IsValid))
{
log.Error("Invalid smtp settings detected in SendEmail ");
return;
}
// DotNetOpenMail doesn't work in Medium Trust so fall back to built in System.Net classes
if (ConfigurationManager.AppSettings["RunningInMediumTrust"] != null)
{
string runningInMediumTrust = ConfigurationManager.AppSettings["RunningInMediumTrust"];
if (string.Equals(runningInMediumTrust, "true", StringComparison.InvariantCultureIgnoreCase))
{
SendEmailNormal(smtpSettings, from, to, cc, bcc, subject, messageBody, html, priority);
return;
}
}
if (ConfigurationManager.AppSettings["DisableDotNetOpenMail"] != null)
{
string disable = ConfigurationManager.AppSettings["DisableDotNetOpenMail"];
if (string.Equals(disable, "true", StringComparison.InvariantCultureIgnoreCase))
{
SendEmailNormal(smtpSettings, from, to, cc, bcc, subject, messageBody, html, priority);
return;
}
}
if (log.IsDebugEnabled)
{
log.DebugFormat("In SendEmail({0}, {1}, {2}, {3}, {4}, {5}, {6}, {7})",
from,
to,
cc,
bcc,
subject,
messageBody,
html,
priority);
}
EmailMessage mail = new EmailMessage();
EmailAddress fromAddress = new EmailAddress(from);
mail.FromAddress = fromAddress;
if (smtpSettings.PreferredEncoding.Length > 0)
{
mail.HeaderEncoding = DotNetOpenMail.Encoding.EncodingType.Base64;
mail.HeaderCharSet = Encoding.GetEncoding(smtpSettings.PreferredEncoding);
}
if (html)
{
mail.HtmlPart = new HtmlAttachment(messageBody);
if (smtpSettings.PreferredEncoding.Length > 0)
{
mail.HtmlPart.Encoding = DotNetOpenMail.Encoding.EncodingType.Base64;
mail.HtmlPart.CharSet = Encoding.GetEncoding(smtpSettings.PreferredEncoding);
}
}
else
{
mail.TextPart = new TextAttachment(messageBody);
if (smtpSettings.PreferredEncoding.Length > 0)
{
mail.TextPart.Encoding = DotNetOpenMail.Encoding.EncodingType.Base64;
mail.TextPart.CharSet = Encoding.GetEncoding(smtpSettings.PreferredEncoding);
}
}
EmailAddress toAddress;
if (to.Contains(";"))
{
string[] toAddresses = to.Split(new char[] { ';' });
foreach (string address in toAddresses)
{
if (Email.IsValidEmailAddressSyntax(address))
{
toAddress = new EmailAddress(address);
mail.ToAddresses.Add(toAddress);
}
}
}
else
{
if (Email.IsValidEmailAddressSyntax(to))
{
toAddress = new EmailAddress(to);
mail.ToAddresses.Add(toAddress);
}
}
if (mail.ToAddresses.Count == 0)
{
throw new MailException("no valid email address provided for To");
}
if (cc.Length > 0)
{
EmailAddress ccAddress = new EmailAddress(cc);
mail.CcAddresses.Add(ccAddress);
}
if (bcc.Length > 0)
{
EmailAddress bccAddress = new EmailAddress(bcc);
mail.BccAddresses.Add(bccAddress);
}
mail.Subject = subject.RemoveLineBreaks();
switch (priority)
{
//X-Priority Values:
// 1 (Highest), 2 (High), 3 (Normal), 4 (Low), 5 (Lowest)
case PriorityHigh:
mail.AddCustomHeader("X-Priority", "1");
mail.AddCustomHeader("X-MSMail-Priority", "High");
break;
case PriorityLow:
mail.AddCustomHeader("X-Priority", "5");
mail.AddCustomHeader("X-MSMail-Priority", "Low");
break;
case PriorityNormal:
default:
mail.AddCustomHeader("X-Priority", "3");
mail.AddCustomHeader("X-MSMail-Priority", "Normal");
break;
}
int timeoutMilliseconds = ConfigHelper.GetIntProperty("SMTPTimeoutInMilliseconds", 15000);
SmtpServer smtpServer = new SmtpServer(smtpSettings.Server, smtpSettings.Port, smtpSettings.UseSsl);
smtpServer.ServerTimeout = timeoutMilliseconds;
if (smtpSettings.RequiresAuthentication)
{
smtpServer.SmtpAuthToken
= new SmtpAuthToken(
smtpSettings.User,
smtpSettings.Password);
}
try
{
mail.Send(smtpServer);
}
catch (MailException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
}
catch (SocketException ex)
{
log.Error("error sending email to " + to + " from " + from + ", message was: " + messageBody, ex);
}
}
/// <summary>
/// This method uses DotNetOpenMail. DotNetOpenMail doesn't work in Medium Trust.
/// For Medium Trust use the SendMailNormal method.
/// If Web.config setting RunningInMediumTrust is true then this method delegates to SendMailNormal.
/// </summary>
/// <param name="smtpSettings"></param>
/// <param name="from"></param>
/// <param name="replyTo"></param>
/// <param name="to"></param>
/// <param name="cc"></param>
/// <param name="bcc"></param>
/// <param name="subject"></param>
/// <param name="messageBody"></param>
/// <param name="html"></param>
/// <param name="priority"></param>
public static void SendEmail(
SmtpSettings smtpSettings,
string from,
string replyTo,
string to,
string cc,
string bcc,
string subject,
string messageBody,
bool html,
string priority)
{
if ((ConfigurationManager.AppSettings["DisableSmtp"] != null) && (ConfigurationManager.AppSettings["DisableSmtp"] == "true"))
{
log.Info("Not Sending email because DisableSmtp is true in config.");
return;
}
if ((smtpSettings == null) || (!smtpSettings.IsValid))
{
log.Error("Invalid smtp settings detected in SendEmail ");
return;
}
// DotNetOpenMail doesn't work in Medium Trust so fall back to built in System.Net classes
if (ConfigurationManager.AppSettings["RunningInMediumTrust"] != null)
{
string runningInMediumTrust = ConfigurationManager.AppSettings["RunningInMediumTrust"];
if (string.Equals(runningInMediumTrust, "true", StringComparison.InvariantCultureIgnoreCase))
{
SendEmailNormal(smtpSettings, from, to, cc, bcc, subject, messageBody, html, priority);
return;
}
}
// DotNetOpenMail doesn't support replyto
if (replyTo.Length > 0)
{
SendEmailNormal(
smtpSettings,
from,
replyTo,
to,
cc,
bcc,
subject,
messageBody,
html,
priority);
return;
}
SendEmail(
smtpSettings,
from,
to,
cc,
bcc,
subject,
messageBody,
html,
priority);
}