使用office 365时设置mail.smtp.connectiontimeout超时时间

Question

我们通过office 365帐户和SMTP发送邮件，并在application.yml中设置以下参数:

spring:
mail:
host: ${EMAIL_HOST:smtp.office365.com}
port: ${EMAIL_PORT:587}
username: ${EMAIL_USERNAME}
password: ${EMAIL_PASSWORD}
properties:
mail:
smtp:
auth: true
connectiontimeout: 5000
timeout: 5000
writetimeout: 5000
starttls:
enable: true
socketFactory:
port: 465
class: javax.net.ssl.SSLSocketFactory

奇怪的是:如果我们将连接超时设置为5s，服务将在5s后获得响应。如果我们将其设置为20s，则o365在20s之后响应。我的期望是是发送可能花费的最大时间，而不是实际时间。有趣的是，当设置另一个提供商而不是office365时，connectiontimeout按预期工作。

是否有人也有这个问题，也许知道如何解决?

我们的寄件人服务:

@PostMapping
@ResponseStatus(HttpStatus.ACCEPTED)
public void sendMail(@RequestHeader(name = "X-API-KEY", required = true) String requestApiKey, @Valid @RequestBody EmailSendRequest email, HttpServletResponse response) {
if(!apiKey.equals(requestApiKey)){
LOGGER.error("Unauthorized api key" + requestApiKey);
throw new ResponseStatusException(HttpStatus.UNAUTHORIZED);
}
try {
LOGGER.info("Received request to send mail Subject=[{}] To=[{}] From=[{}]", email.getSubject(), email.getTo(), email.getFrom());
MimeMessage message = mailSender.createMimeMessage();
message.setFrom(new InternetAddress(email.getFrom().getEmail()));
message.addRecipients(Message.RecipientType.TO, toAddressArray(email.getTo()));
message.addRecipients(Message.RecipientType.CC, toAddressArray(email.getCc()));
message.addRecipients(Message.RecipientType.BCC, toAddressArray(email.getBcc()));
message.setSubject(email.getSubject());
message.setSentDate(new Date());
Multipart multipart = new MimeMultipart();
MimeBodyPart messageText = new MimeBodyPart();
messageText.setContent(email.getContent().getValue(),
email.getContent().getType() == null ? DEFAULT_CONTENT_MIMETYPE : email.getContent().getType());
multipart.addBodyPart(messageText);
addAttachments(multipart, email.getAttachments());
message.setContent(multipart);
if(message.getRecipients(Message.RecipientType.TO) != null ||
message.getRecipients(Message.RecipientType.CC) != null ||
message.getRecipients(Message.RecipientType.BCC) != null)
{
mailSender.send(message);
}
else {
LOGGER.warn("Email not send! No recipients or all ignored.");
response.setHeader("X-Ignored","true");
}
LOGGER.info("Mail Subject=[{}] To=[{}}] From=[{}] successfully sent.",email.getSubject(),email.getTo(),email.getFrom());
} catch (MessagingException e) {
LOGGER.error("Error sending mail Subject=[{}] To=[{}] From=[{}]:", email.getSubject(), email.getTo(), email.getFrom(), e);
throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR);
} catch (MailSendException mailSendException) {
Exception[] exceptions = mailSendException.getMessageExceptions();
for (Exception e : exceptions){
if (e instanceof SMTPSendFailedException && (((SMTPSendFailedException)e).getReturnCode() == 554)){
LOGGER.error("Error sending mail Subject=[{}] To=[{}] From=[{}]: This sender mail address is not allowed.", email.getSubject(), email.getTo(), email.getFrom());
throw new ResponseStatusException(HttpStatus.FORBIDDEN);
}
}
LOGGER.error("Error sending mail Subject=[{}] To=[{}] From=[{}]:", email.getSubject(), email.getTo(), email.getFrom(), mailSendException);
throw new ResponseStatusException(HttpStatus.INTERNAL_SERVER_ERROR);
} catch (MailAuthenticationException e) {
LOGGER.error("Error sending mail Subject=[{}] To=[{}] From=[{}]: Wrong SMTP login credentials provided. nMSG:{}", email.getSubject(), email.getTo(), email.getFrom(),e.getMessage());
throw new ResponseStatusException(HttpStatus.NETWORK_AUTHENTICATION_REQUIRED);
}
}

Answer 1

看来，SocketFactory应该对这种行为负责。从应用程序中删除以下行。Yml使应用程序按预期工作:

socketFactory:
port: 465
class: javax.net.ssl.SSLSocketFactory