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I'm trying to send mail on my server which on located on vps in Google Cloud. I can telnet to gmail's SMTP both 587/465 but i can't connect via telnet to Yandex.

It's stucking on Trying ....

# telnet mail.yandex.ru 587
Trying 213.180.193.125...

I opened all ports (both tcp and udp) but still same.

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  • Ask google support.
    – Jenny D
    Mar 14, 2017 at 9:27

1 Answer 1

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I ended up with solution. Unfortunately Google is blocking port 25, 465 and 587 for our sake. Only Gmail and GSuite is supported on Google Cloud Engine.

For further information see link below;

https://cloud.google.com/compute/docs/tutorials/sending-mail/

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