2013年4月4日 · SMTP protocol: smtps (port 465) v. msa (port 587) Ports 465 and 587 are intended for email client to email server communication - sending out email using SMTP protocol. Port 465 is for smtps SSL encryption is started automatically before any SMTP level communication. Port 587 is for msa It is almost like standard SMTP port.

2013年3月13日 · Thanks. I don't know what is the d_uname field utility. In the other side, in the connection instruction, we should pass the email rather than the user name : transport.connect(d_host, Integer.valueOf(d_port), d_email, d_password);.

2016年5月30日 · oSmtp.UserName = "[email protected]" oSmtp.Password = "yourpassword" ' Set port to 25, if you want to use 587 port, please change 25 to 587 oSmtp.ServerPort = 25 ' detect SSL/TLS connection automatically oSmtp.SSL_init MsgBox "start to send email ..." If oSmtp.SendMail() = 0 Then MsgBox "email was sent successfully!"

Here is the code of the application. I have been trying to run this using eclipse IDE. I also added all the required java mail jar files namely dsn.jar,imap.jar,mailapi.jar,pop3.jar,smtp.jar,mail....

2015年6月4日 · To send mail to Gmail using System::Net::Mail::SmtpClient and SSL, you must use port 587, as documented in the GMail API. Both ports 25 and 587 are available on GMail, but Port 587 will require a SMTP authentication before sending a mail, while port 25 won't. Given that port 25 don't require sender authentication, GMail will more agressively ...

2016年4月13日 · To fix it make sure that you either use implicit or explicit SSL but not both depending on the port, i.e. for port 25 mail.smtp.ssl.enable should be false. Share Improve this answer

However the Exchange 365 platform requires TLS encryption on port 587, and there is a 'feature' of System.Net.Mail that does not permit Implicit SSL encryption. Has anyone managed to get C# sending mails via this platform? I have the following basic code that should send the mail - any advice would be appreciated.

2019年8月29日 · The port for SSL is 465 and not 587, however when I used SSL the mail arrived to the junk mail. For me the thing that worked was to use TLS over regular SMTP instead of SMTP_SSL . Note that this is a secure method as TLS is also a cryptographic protocol (like SSL).

2008年9月15日 · Also if you want to do smtp auth with TLS as opposed to SSL then you just have to change the port (use 587) and do smtp.starttls(). This worked for me:... smtp.connect('YOUR.MAIL.SERVER', 587) smtp.ehlo() smtp.starttls() smtp.ehlo() smtp.login('USERNAME@DOMAIN', 'PASSWORD') ...

2015年9月19日 · On my Mac terminal, I am trying to telnet into my smtp.gmail.com through port 587. On Google Apps, (which is set to manage a Dreamhost domain), I have relay configured, as follows: "Allowed senders: Only addresses in my domains" "Require SMTP Authentication: Yes" when I HELO <[email protected]>, I get: 250 smtp.gmail.com at your service