Connection timed out with smtp.zoho.com

Connection timed out with smtp.zoho.com

Hello, I have a domain "digitworks.pro" on zoho mail, when sending mail from sendmail on smtp.zoho.com:465 in the logs there is an error:

Feb 6 11:01:55 raspberrypi sm-mta [4517]: t167OH6d003970: to = < mymail@gmail.com>, ctladdr = < info@digitworks.pro> (1003/1005), delay = 00: 37: 37, xdelay = 00: 00: 00, mailer = relay, pri = 660364, relay = smtp.zoho.com., dsn = 4.0.0, stat = Deferred: Connection timed out with smtp.zoho.com.

When testing the connection via telnet program stops after point and waits. Then an error message: "read: errno = 0"

Log telnet:

250 SIZE 25000000
ehlo smtp.zoho.com
250-mx.zohomail.com Hello smtp.zoho.com (31.129.36.120 (31.129.36.120))
250-AUTH LOGIN PLAIN
250 SIZE 25000000
auth login
334 VXNlcm5hbWU6
aW5mb0BkaWdpdHdvcmtzLnBybw==
334 UGFzc3dvcmQ6
***** password *****
235 Authentication Successful
mail from:< info@digitworks.pro>
250 Sender < info@digitworks.pro> OK
rcpt to:< mymail@gmail.com>
250 Recipient < mymail@gmail.com> OK
data
354 Ok Send data ending with <CRLF>.<CRLF>
Subject: test zoho
zoho message
.                                  <-------- At this moment program long wait
read:errno=0


What could be wrong?