unable to send mail

[OkenKhuman]

I use email generated using https://www.fakemail.net/ for testing as

docker run -d --name=postfix -e MTP_HOST=andyes.net -e MTP_RELAY=mail.andyes.net -e MTP_USER=ferdinand.sutton -e MTP_PASS=gfqkc2K@ eeacms/postfix

and on its log I got

Jun 22 17:33:52 90c24854f4ca chaperone[1]: Switching all chaperone logging to /dev/log
Jun 22 17:33:52 90c24854f4ca chaperone[1]: chaperone version 0.3.9, ready.
Jun 22 17:33:54 90c24854f4ca postfix-script[139]: starting the Postfix mail system
Jun 22 17:33:55 90c24854f4ca master[141]: daemon started -- version 2.10.1, configuration /etc/postfix

So I connected to the container using

docker run -it --rm --link=postfix busybox sh

and run the following commands

 telnet postfix 25
(->gave output>  Connected to postfix
(->gave output>  220 andyes.net ESMTP Postfix
HELO andyes.net   (->gave output>  250 andyes.net
MAIL FROM: ferdinand.sutton@andyes.net    (->gave output> 250 2.1.0 Ok
RCPT TO: otot66@promailerapp.com  (->gave output> 250 2.1.5 Ok
DATA   (->gave output> 354 End data with <CR><LF>.<CR><LF>
DATA
subject: Test
Testing 1, 2, 3
.     (->gave output>   250 2.0.0 Ok: queued as E0C8913F488
quit   (->gave output>  221 2.0.0 Bye

but I didn't get any mail. I tried the reciving end as my mail also but I don't receive anything.
Please help me out

[arky]

@OkenKhuman Perhaps the mail delivery was blocked by 550 5.7.1 error when sending email. Did you check the logs ?