211 System status, or system help reply 214 Help message [Information on how to use the receiver or the meaning of a particular non-standard command; this reply is useful only to the human user] 220 Service ready 221 Service closing transmission channel 421 Service not available, closing trans...
SSL/TLS协议通常是结对出现SSL/TLS,不过大家还是喜欢简称为SSL。 目前最新版本是TLS 1.3,其他可用版本是TLS 1.2和TLS 1.1,其中TLS1.1计划于2020年弃用 所以,目前主流的邮箱服务商加密协议使用的都是TLS。 但是System.Net.Mail.SmtpClient不支持较新的TLS协议,具体的TLS协议版本支持情况MSDN上并未找到相关说明 截止到...
# cpan Net::SMTP::TLS # vi mail.pl #!/usr/bin/perl -w use Net::SMTP::TLS; my $subject = 'Test mail'; my $header = << "MAILHEADER"; Content-Type:text/plain;charset="UTF-8" MAILHEADER my $body = << "EOF"; Hi Zhi hello EOF my $mailer = new Net::SMTP::TLS( 'smtp....
Support for running SMTP with TLS is not enabled by default. TLS is enabled when the SMTP client issues theSTARTTLScommand. Before the SMTP client can issue this command, you must set up the certificates that enablesendmailto use TLS. SeeHow to Set SMTP to Use TLS. Note that this procedur...
最主要的原因之一为：安装的杀毒软件将Solid Works服务设为禁止启动，每次开机后都需要进行手动的启动，...
所以，在大多数情况下，名词SSL和TLS可以互换使用。它们通过将设置MAIL_USE_SSL为True开启。STARTTLS是另...
For TLS transmission to be used, the destination email server must offer support for TLS, and the sending computer or server must be configured to use TLS connections when possible. The sending computer or server could be configured for: No TLS: never use it. Opportunistic TLS: use it if ...
But SSL was replaced by Transport Layer Security (TLS), and modern email systems therefore do not use this port. It only appears in legacy (outdated) systems. Port 587 is now the default port for email submission. SMTP communications via this port use TLS encryption. Port 2525 is not ...
If you enable transport layer security (TLS) 1.1 or TLS 1.2 in a Microsoft Exchange Server 2010 environment, simple mail transfer protocol (SMTP) uses TLS 1.0 unexpectedly. Cause This issue occurs because of a hard-coded restriction that limits SMTP to use secure sockets layer...
If you enable transport layer security (TLS) 1.1 or TLS 1.2 in a Microsoft Exchange Server 2010 environment, simple mail transfer protocol (SMTP) uses TLS 1.0 unexpectedly. Cause This issue occurs because of a hard-coded restriction that...