SQL Server DB mail Server Failure - sql-server

I have a SMTP server by using which I was smoothly sending e-mails using sp db_mail.But now I am not able to send any DB mail using the same profile, all the configuration from SQL Server is fine, but instead getting the following message in Error log
Message
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 2 (2016-04-21T04:09:58). Exception Message: Cannot send mails to mail server. (Failure sending mail.).
)
P.S. By using the same SMTP server, I am able to send Mails from another IP.
The telnet thing is getting aborted when I tried it from the command line.
Any ideas?

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SQL Server Database Mail: The mail could not be sent to the recipients because of the mail server failure

I'm using SQL Server 2012 Developer edition to test Database Mail functionality. But I'm receiving the below error.
The steps I followed:
Installed e-mail certificate to Trusted root certification authorities.
Tested the e-mail functionality using sa user
Account 1 is using port 587 with SSL.
Account 2 is using port 465 with SSL.
Account 3 is using port 25 without SSL.
All accounts are with Basic authentication ( the user name and password is cross verified).
The mail could not be sent to the recipients because of the mail server failure.
(Sending Mail using Account 1 (2021-09-01T15:45:56). Exception Message: Cannot send mails to mail server. (The remote certificate is invalid according to the validation procedure.).
Sending Mail using Account 2 (2021-09-01T15:47:36). Exception Message: Cannot send mails to mail server. (The operation has timed out.).
Sending Mail using Account 3 (2021-09-01T15:47:57). Exception Message: Cannot send mails to mail server. (Service not available, closing transmission channel. The server response was: Cannot connect to SMTP server xxx.xx.xx.xx (xxx.xx.xx.xx:25), connect error 10060).

SQL Server 2018 : database email - exception message: Cannot send mails to mail server. (The operation has timed out

I am using SQL Server Management Studio V18. I would like to schedule a job in SQL agent, which will send some mail based on some condition. For that I have configured database account profile and I am trying to test the email. But email is not received. It is saying the below error. any help on this will appreciate.
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 1002 (2021-03-30T05:36:55).
Exception Message: Cannot send mails to mail server (The operation has timed out
My suggestion is to either connect "in the clear" or use a custom or 3rd party program. This (maddening) issue has been with SQL Server for over a decade and, for us, it was because of using a secure connection (time outs - some mail never sent - yada yada). Our email server gets the connection credentials, so it IS communicating with it - (handshaking), but there's a bug with SSL when it comes time to deliver the message.
Our solution was to create a CLR C# program that gets called and delivers messages correctly. You can look for a 3rd party emailer as well. SQL email will always disappoint.

Cannot send database Mail using sql server 2008 r2 Data Center Edition

I have configured different ways and tried to send test email , didn't work.
Error: The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 5 (2018-01-22T14:28:24). Exception Message: Could not connect to mail server.
(A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 74.125.24.108:587). )
Configured the database Mail as blow.
I have tried possible changes but still getting failed.
1.Verified all usernames and passwords
2.Checked with different ports 465 ,587 and default 25
3.pinged SMTP.gmail.com its working
4.Control antivirus and firewall settings
I have refereed
Sending Email through SQL Server FAILED
any other ways ?
Please check your settings on GMail. You need to switch on the 'Allow Less Secure Apps' setting so that it will allow third party apps such as SQL Server to access the GMail servers.

SQL Server 2012 mail server operation timeout issue

I am trying to send approximately 300 mails from the SQL Server 2012 but when I check msdb.dbo.sysmail_mailitems it shows only few mails are sent; others failed with this message:
The mail could not be sent to the recipients because of the mail server failure. (Sending Mail using Account 3 (2017-06-06T10:59:27). Exception Message: Cannot send mails to mail server. (The operation has timed out.)
What is the default timeout for SQL Server?

Why i can not send email in sql server?

I'm try to send email with sql server ,for that purpose config with this way smtp:
Outgoing mail server(SMTP)
___________________________________ E-mail address:myEmail#gmail.com DisplayName:behzad ServerName:smtp.gmail.com PortNumber:587
Enable:This server requeires a secure connection (SSL)
____________________________________ SMTP Authentication - Basic Authentication UserName:myEmail#gmail.com Password:my Email Password
But when try to send simple mail get this error: The mail could
not be sent to the recipients because of the mail server failure.
(Sending Mail using Account 2 (2017-04-05T10:57:35). Exception
Message: Cannot send mails to mail server. (The SMTP server requires a
secure connection or the client was not authenticated. The server
response was: 5.5.1 Authentication Required. Learn more at).
read any help on internet and enable two step verification gmail and...
but so get that error.How can i solve that problem?thanks.

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