blocks|key|1555132|text|如果您使用的是Gmail服务器，那么很抱歉来晚了Party.These可能是您任务中的问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1555133|1555134|Two+Step+Verification+should+be+turned+off.|ordered-list-item|offset|length|1555135|Allow+Less+Secure+App(should+be+turned+on).|1555136|Please检查你的Password.|1555137|Check和UserName代码(这是我的问题)，上面三个你可以从谷歌帮助中心更改，最后一个我可以和你分享的经验。在传递消息之前，您需要对邮件服务器进行身份验证，因为您通过邮件进行通信的是质询响应系统。I+am+sharing+code+snippets+file+you可以通过ctrl%2BK引用无法格式化我的代码。|1555138|1555139|entityMap|0|LINK|mutability|MUTABLE|url|https://support.google.com/accounts/answer/1064203?hl=en|1|https://myaccount.google.com/lesssecureapps|2|https://drive.google.com/open?id=0B4x2Ztnd_jhjTFlWVmJmTzdkbVU^0|0|0|0|16|0|0|0|16|1|0|0|2T|Z|2|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|12|8|@]|9|@$F|13|G|14|1|15]]|A|$]]|$1|H|3|I|5|E|7|16|8|@]|9|@$F|17|G|18|1|19]]|A|$]]|$1|J|3|K|5|E|7|1A|8|@]|9|@]|A|$]]|$1|L|3|M|5|E|7|1B|8|@]|9|@$F|1C|G|1D|1|1E]]|A|$]]|$1|N|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]|W|$5|R|S|T|A|$U|X]]|Y|$5|R|S|T|A|$U|Z]]]]

Sorry for coming late to Party.These could be the problem in your task if you are using Gmail Server.

<ol>
<li><a href="https://support.google.com/accounts/answer/1064203?hl=en" rel="noreferrer">Two Step Verification should be turned off</a>.</li>
<li><a href="https://myaccount.google.com/lesssecureapps" rel="noreferrer">Allow Less Secure App(should be turned on)</a>.</li>
<li>Please Check Your UserName and Password.</li>
<li>Check the code(which was my Problem), Above three You can change form google help center and by Yourself last one My Experience I can Share with You.
You need to Authenticate the Mail server before Communicating the message because it is Challenge Response System By which You are Communicating through the mail.<a href="https://drive.google.com/open?id=0B4x2Ztnd_jhjTFlWVmJmTzdkbVU" rel="noreferrer">I am sharing code snippets file you</a> can refer not able to format my code by ctrl+K.</li>
</ol>

blocks|key|3984879|text|这对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3984880|3984881|从|ordered-list-item|3984882|登录到您要发送邮件的gmail帐户转到管理您的Google帐户->安全->不太安全的应用程序访问->打开访问(不推荐)|3984883|3984884|或|3984885|访问URL：|3984886|https://www.google.com/settings/security/lesssecureapps|offset|length|3984887|Turn“允许安全性较低的应用程序:关闭”以“允许安全性较低的应用程序:打开”|unordered-list-item|3984888|3984889|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|0|0|1J|0|0|0|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|13|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|14|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|16|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|17|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|18|8|@]|9|@$O|19|P|1A|1|1B]]|A|$]]|$1|Q|3|R|5|S|7|1C|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|N]]]]

This worked for me:

<ol>
<li>Login to the gmail account you are sending mail from</li>
<li>Go to Manage your Google Account -> Security -> Less secure app access -> Turn on access (not recommended)
 
or
 
Access the URL: 
<a href="https://www.google.com/settings/security/lesssecureapps" rel="noreferrer">https://www.google.com/settings/security/lesssecureapps</a></li>
<li>Turn "Allow less secure apps: OFF" to "Allow less secure apps: ON"</li>
</ol>

blocks|key|1875130|text|第一步:登录你的gmail账号|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1875131|第2步:单击设置|1875132|​|1875133|📷|atomic|offset|length|1875134|1875135|第3步:单击帐户和导入选项卡>其他Google帐户设置|1875136|1875137|1875138|1875139|第4步:单击安全|1875140|1875141|滚动到页面底部不太安全的应用访问下，单击打开access|unordered-list-item|1875142|1875143|1875144|1875145|1875146|步骤5:将允许安全性较低的应用程序设置为打开|1875147|1875148|1875149|1875150|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7e0e079131a2a48b192ec621a5d8894c.jpeg|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/9415d2aa7cd188a9683a857e5c2dcdc2.jpeg|2|https://ask.qcloudimg.com/http-save/yehe-900000/3a12b82c109334ef3357d239c1e8cace.jpeg|3|https://ask.qcloudimg.com/http-save/yehe-900000/1f1de21536a0413eb7db72ce9d898c8e.jpeg^0|0|0|0|0|1|0|0|0|0|0|0|1|1|0|0|0|0|0|0|0|0|1|2|0|0|0|0|0|1|3|0|0^^$0|@$1|2|3|4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1L|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1M|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|1N|8|@]|9|@$I|1O|J|1P|1|1Q]]|A|$]]|$1|K|3|E|5|6|7|1R|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1S|8|@]|9|@]|A|$]]|$1|N|3|E|5|6|7|1T|8|@]|9|@]|A|$]]|$1|O|3|G|5|H|7|1U|8|@]|9|@$I|1V|J|1W|1|1X]]|A|$]]|$1|P|3|E|5|6|7|1Y|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|20|8|@]|9|@]|A|$]]|$1|T|3|U|5|V|7|21|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|22|8|@]|9|@]|A|$]]|$1|X|3|E|5|6|7|23|8|@]|9|@]|A|$]]|$1|Y|3|G|5|H|7|24|8|@]|9|@$I|25|J|26|1|27]]|A|$]]|$1|Z|3|E|5|6|7|28|8|@]|9|@]|A|$]]|$1|10|3|11|5|6|7|29|8|@]|9|@]|A|$]]|$1|12|3|E|5|6|7|2A|8|@]|9|@]|A|$]]|$1|13|3|G|5|H|7|2B|8|@]|9|@$I|2C|J|2D|1|2E]]|A|$]]|$1|14|3|E|5|6|7|2F|8|@]|9|@]|A|$]]|$1|15|3|-4|5|6|7|2G|8|@]|9|@]|A|$]]]|16|$17|$5|18|19|1A|A|$1B|1C|1D|-4]]|1E|$5|18|19|1A|A|$1B|1F|1D|-4]]|1G|$5|18|19|1A|A|$1B|1H|1D|-4]]|1I|$5|18|19|1A|A|$1B|1J|1D|-4]]]]

Step 1: Log into your gmail account
Step 2: Click Settings
<a href="https://i.stack.imgur.com/FK6tF.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/FK6tF.jpg" alt="enter image description here" /></a>
Step 3: Click the Accounts and Import Tab &gt; Other Google Account Settings
<a href="https://i.stack.imgur.com/YtlF4.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/YtlF4.jpg" alt="enter image description here" /></a>
Step 4: Click Security
<ul>
<li>Scroll to the bottom of the page Under Less secure app access, click on Turn on access</li>
</ul>
<a href="https://i.stack.imgur.com/9znAI.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/9znAI.jpg" alt="enter image description here" /></a>
Step 5: Set Allow less secure apps to ON
<a href="https://i.stack.imgur.com/bOrOE.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/bOrOE.jpg" alt="enter image description here" /></a>

blocks|key|1874902|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1874903|首先确保所有属性的定义如下：-|ordered-list-item|1874904|1874905|mail.smtp.host=smtp.gmail.com、mail.smtp.port=25、mail.smtp.auth=true+mail.smtp.starttls.enable=true|offset|length|style|CODE|1874906|1874907|现在，请确保两步验证已关闭|1874908|允许不太安全的应用程序(打开)请单击此链接:-+|1874909|1874910|https://myaccount.google.com/lesssecureapps|1874911|1874912|另外，请检查您的用户名和密码是否正确。|1874913|1874914|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|T|U|H|1C|J|1W|U|0|0|0|0|0|0|17|0|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|13|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|14|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|E|3|F|4|5|6|16|7|@$G|17|H|18|I|J]|$G|19|H|1A|I|J]|$G|1B|H|1C|I|J]|$G|1D|H|1E|I|J]]|8|@]|9|$]]|$1|K|3|-4|4|5|6|1F|7|@]|8|@]|9|$]]|$1|L|3|M|4|C|6|1G|7|@]|8|@]|9|$]]|$1|N|3|O|4|C|6|1H|7|@]|8|@]|9|$]]|$1|P|3|-4|4|5|6|1I|7|@]|8|@]|9|$]]|$1|Q|3|R|4|5|6|1J|7|@]|8|@$G|1K|H|1L|1|1M]]|9|$]]|$1|S|3|-4|4|5|6|1N|7|@]|8|@]|9|$]]|$1|T|3|U|4|C|6|1O|7|@]|8|@]|9|$]]|$1|V|3|-4|4|5|6|1P|7|@]|8|@]|9|$]]|$1|W|3|-4|4|5|6|1Q|7|@]|8|@]|9|$]]]|X|$Y|$4|Z|10|11|9|$12|R]]]]

<ol>
<li>First of all make sure that all properties should be defined as follows:-</li>
</ol>

<code>mail.smtp.host=smtp.gmail.com</code>,
<code>mail.smtp.port=25</code>,
<code>mail.smtp.auth=true</code>
<code>mail.smtp.starttls.enable=true</code>

<ol start="2">
<li>Now,make sure that two step verification is off</li>
<li>Allow less secure app (ON) follow this link :- </li>
</ol>

<a href="https://myaccount.google.com/lesssecureapps" rel="noreferrer">https://myaccount.google.com/lesssecureapps</a>

<ol start="4">
<li>Also, check your username and password is correct or not.</li>
</ol>

blocks|key|1875035|text|适用于我，您必须通过以下步骤配置您的Gmail帐户：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1875036|在安全部分中：|1875037|您需要将“允许安全性较低的应用程序:关闭”更改为“允许安全性较低的应用程序:打开”|1875038|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

It works for me, you must configure your Gmail account with the below steps:

In the security section:

You need to Change "Allow less secure apps: OFF" to "Allow less secure apps: ON"

blocks|key|1874992|text|登录gmail帐户，在帐户->中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1874993|单击安全->关闭两步验证并打开“不太安全的应用程序访问”|1874994|可能是因为上面的原因，希望能对你有所帮助|1874995|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Log on gmail account, in Account -> 

click Security -> turn off 2-step verification and turn on "Less secure app access"

May be because of things above, hope help you

blocks|key|1874940|text|请按照以下步骤操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1874941|应关闭|1874942|禁用|ordered-list-item|1874943|上的不太安全的应用程序的两步验证。|1874944|1874945|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|O|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Follow the steps:

<ol>
<li>Disable antivirus</li>
<li>Allow Less Secure App On</li>
<li>Two Step Verification should be turned off.</li>
</ol>

blocks|key|3984819|text|1.允许不太安全的应用程序(应打开)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3984820|2.检查Gmail用户名和密码。|3984821|+public+static+void+main(String[]+args)+{

++++++++final+String+username+=+"YourMailId";
++++++++final+String+password+=+"password";

++++++++Properties+prop+=+new+Properties();
++++++++prop.put("mail.smtp.host",+"smtp.gmail.com");
++++++++prop.put("mail.smtp.port",+"587");
++++++++prop.put("mail.smtp.auth",+"true");
++++++++prop.put("mail.smtp.starttls.enable",+"true");+//TLS

++++++++Session+session+=+Session.getInstance(prop,
++++++++++++++++new+javax.mail.Authenticator()+{
++++++++++++++++++++protected+PasswordAuthentication+getPasswordAuthentication()+{
++++++++++++++++++++++++return+new+PasswordAuthentication(username,+password);
++++++++++++++++++++}
++++++++++++++++});

++++++++try+{

++++++++++++Message+message+=+new+MimeMessage(session);
++++++++++++message.setFrom(new+InternetAddress("Tarunsunny143@gmail.com"));
++++++++++++message.setRecipients(
++++++++++++++++++++Message.RecipientType.TO,
++++++++++++++++++++InternetAddress.parse("balachandralucky2@gmail.com,+to_username_b@yahoo.com")
++++++++++++);
++++++++++++message.setSubject("Testing+Gmail+TLS");
++++++++++++message.setText("Dear+Mail+Crawler,"
++++++++++++++++++++%2B+"\n\n+Please+do+not+spam+my+email!");

++++++++++++Transport.send(message);

++++++++++++System.out.println("Done");

++++++++}+catch+(MessagingException+e)+{
++++++++++++e.printStackTrace();
++++++++}
++++}

}|code-block|syntax|javascript|3984822|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

1.Allow Less Secure App(should be turned on).

2.Check Gmail Username and Password..

<pre><code> public static void main(String[] args) {

 final String username = "YourMailId";
 final String password = "password";

 Properties prop = new Properties();
 prop.put("mail.smtp.host", "smtp.gmail.com");
 prop.put("mail.smtp.port", "587");
 prop.put("mail.smtp.auth", "true");
 prop.put("mail.smtp.starttls.enable", "true"); //TLS

 Session session = Session.getInstance(prop,
 new javax.mail.Authenticator() {
 protected PasswordAuthentication getPasswordAuthentication() {
 return new PasswordAuthentication(username, password);
 }
 });

 try {

 Message message = new MimeMessage(session);
 message.setFrom(new InternetAddress("Tarunsunny143@gmail.com"));
 message.setRecipients(
 Message.RecipientType.TO,
 InternetAddress.parse("balachandralucky2@gmail.com, to_username_b@yahoo.com")
 );
 message.setSubject("Testing Gmail TLS");
 message.setText("Dear Mail Crawler,"
 + "\n\n Please do not spam my email!");

 Transport.send(message);

 System.out.println("Done");

 } catch (MessagingException e) {
 e.printStackTrace();
 }
 }

}
</code></pre>

blocks|key|3984924|text|我也有同样的错误，但当我从终端运行应用程序时，它就消失了。提供了我的邮箱配置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3984925|spring.mail.host=smtp.googlemail.com
spring.mail.username=weddingcard9999@gmail.com
spring.mail.password=Weddingcard.1
spring.mail.port=587
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.required=true|code-block|syntax|javascript|3984926|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I have the same error but when I run the app from the terminal, it goes away. My email configuration is provided: 

<pre><code>spring.mail.host=smtp.googlemail.com
spring.mail.username=weddingcard9999@gmail.com
spring.mail.password=Weddingcard.1
spring.mail.port=587
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.required=true
</code></pre>

blocks|key|1555323|text|请通过单击google安全面板中的切换按钮来打开。然后，它还将允许安全性较低的应用程序。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1555324|​|1555325|📷|atomic|offset|length|1555326|1555327|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/dce170a21d7bfd6b7d6060cef6f47959.jpeg|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Please turn on by clicking the toggle button inside the google security panel.
Then it will allow less secured app also.
<a href="https://i.stack.imgur.com/ReR1M.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ReR1M.jpg" alt="enter image description here" /></a>

blocks|key|1874756|text|您可能会收到此错误，因为发件人邮件id的用户名和密码不匹配。请重新检查您的密码和邮件id(用户名)。可能是打字错误。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1874757|在某些情况下，Gmail会阻止未经授权的外部应用程序或程序登录。还要登录到您的gmail帐户，以检查gmail是否已阻止通过Java+Mail+API程序登录到您的帐户。|1874758|如果没有效果，你可以尝试其他的SMTP服务器(如yahoo、yandex)。|1874759|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

You probably got this error because the username and password of the from mail id is not matching. Please recheck your password and mail-id (username). It could be a typo.

In some cases, Gmail prevents logging in through external applications or programs which are not authorised.
Also login to your gmail account to check if gmail has prevented logging in to your account via your Java Mail API program.

If nothing works, you could try some other SMTP server (like yahoo, yandex).

blocks|key|5402871|text|如下所示更改Google中的设置：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5402872|​|5402873|📷|atomic|offset|length|5402874|5402875|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/155315fa3b9596df162710e4fef5e285.png|imageAlt^0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@$G|V|H|W|1|X]]|A|$]]|$1|I|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q|R|-4]]]]

Change the settings in Google like this:
<img src="https://i.stack.imgur.com/DidAj.png" alt="https://i.stack.imgur.com/DidAj.png" />

blocks|key|3985164|text|对于我的作品，请更改为@Heisenberg推荐的属性"mail.host“。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3985165|documentation说要用"smtp.gmail.com“，但我只用"smtp.googlemail.com”。|offset|length|3985166|PS:我的允许不太安全的应用程序配置已经打开|3985167|entityMap|0|LINK|mutability|MUTABLE|url|https://support.google.com/mail/answer/7126229?p=BadCredentials&visit_id=637811383589069651-2427821905&rd=2#cantsignin&zippy=%252Ci-cant-sign-in-to-my-email-client%252Cstep-change-smtp-other-settings-in-your-email-client^0|0|0|D|0|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Q|8|@]|9|@$D|R|E|S|1|T]]|A|$]]|$1|F|3|G|5|6|7|U|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|V|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]]]

For me works change the property &quot;mail.host&quot; recomended for @Heisenberg.
At <a href="https://support.google.com/mail/answer/7126229?p=BadCredentials&amp;visit_id=637811383589069651-2427821905&amp;rd=2#cantsignin&amp;zippy=%2Ci-cant-sign-in-to-my-email-client%2Cstep-change-smtp-other-settings-in-your-email-client" rel="nofollow noreferrer">documentation</a> says to use &quot;smtp.gmail.com&quot; but works only I use &quot;smtp.googlemail.com&quot;.
PS: My Allow Less Secure App configuration was already On

I am getting this error when I try to send mail using the JavaMail API: 

<pre><code>javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted
</code></pre>

How can I fix this?

javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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当我尝试使用JavaMail应用程序接口发送邮件时，收到以下错误：javax.mail.AuthenticationFailedException: 535-5.7.8 Username and Password not accepted我该如何解决这个问题呢？

问javax.mail.AuthenticationFailedException: 535-5.7.8不接受用户名和密码
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回答 13

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问javax.mail.AuthenticationFailedException: 535-5.7.8不接受用户名和密码
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