What is the difference between ports 465 and 587? [closed]
These ports 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them?
Sometimes couldn't connect to host, port: smtp.office365.com, …
Mar 13, 2025 · I use org.springframework.mail.javamail.JavaMailSender to send emails via smtp.office365.com. It works most of the time but sometimes emails are not send because of …
email - 端口 465 和 587 有什么区别？_Stack Overflow中文网
Apr 3, 2013 · 端口 587： 这是默认的邮件提交端口。 当邮件客户端或服务器提交要由适当的邮件服务器路由的电子邮件时，它应该始终使用此端口。
Python freezes on smtplib.SMTP ("smtp.gmail.com", 587)
May 31, 2018 · I am attempting to create a script that send an email, using Gmail. However, my code freezes when the line below is ran: smtplib.SMTP("smtp.gmail.com", 587) It is before my …
如何看待这1644史观及其衍生出来的1313、1279、907、587 …
如何看待这1644史观及其衍生出来的1313、1279、907、587、BC134、BC221史观？ 还有武王伐纣、商汤灭夏、白垩纪史观这些衍生史观
Enviar e-Mail com STARTTLS porta 587 - Stack Overflow em …
Preciso enviar um e-mail usando as configurações do cliente. O acesso ao host utiliza segurança STARTTLS usando porta 587. Para testes montei o seguinte código (alterei os dados do …
sockets - Sending emails through Java - Stack Overflow
Sep 28, 2014 · Sending emails through Java - javax.mail.MessagingException: Could not connect to SMTP host: localhost, port: 587; Asked 11 years, 2 months ago Modified 9 years, 7 months …
Como mandar emails com PHP usando a porta 587?
Jun 9, 2018 · Como faço para que o PHP cadastre o cliente no banco de dados e depois envie o login e senha gerado automaticamente para este cliente usando a porta 587 do servidor …
Telnet smtp.mail - must issue STARTTLS command first
Sep 19, 2015 · You're required to start encrypting the connection first. This is done using the STARTTLS command. You can use the following command instead of telnet: openssl s_client …
Connection could not be established with host smtp.office365.com ...
Apr 7, 2022 · MAIL_PORT=587 MAIL_USERNAME= //your username MAIL_PASSWORD= //your password MAIL_ENCRYPTION=tls according to this issue discussions, it seems that it may …