Objective-C

Send an SMTP RSET Command

Demonstrates the Chilkat MailMan.SmtpReset method, which sends an SMTP RSET command to the server. RSET resets the server-side state of the current mail transaction. This example opens a connection, sends RSET, and closes.

Background: During an SMTP session a message is built up across MAIL FROM and RCPT TO commands. If you need to abandon that partially-specified transaction — say an error occurred midway — RSET clears it without dropping the connection, so the same authenticated session can start a fresh message. It's a lightweight way to recover in-session rather than reconnecting.

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Objective-C

#import <CkoMailMan.h>

BOOL success = NO;

//  Demonstrates the MailMan.SmtpReset method, which sends an SMTP RSET command to the server.
//  RSET resets the server-side state of the current mail transaction.

CkoMailMan *mailman = [[CkoMailMan alloc] init];

//  Configure the SMTP server connection.
mailman.SmtpHost = @"smtp.example.com";
mailman.SmtpPort = [NSNumber numberWithInt:465];
mailman.SmtpSsl = YES;
mailman.SmtpUsername = @"user@example.com";
mailman.SmtpPassword = @"myPassword";

//  Open the connection.

success = [mailman OpenSmtpConnection];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

//  Reset the current SMTP mail transaction.
success = [mailman SmtpReset];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

success = [mailman CloseSmtpConnection];
if (success == NO) {
    NSLog(@"%@",mailman.LastErrorText);
    return;
}

NSLog(@"%@",@"Sent SMTP RSET.");