# I can't send mails
**URL:** https://forum.yunohost.org/t/i-cant-send-mails/10229
**Category:** Support
**Created:** [February 5, 2020, 1:06pm UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229 "2020-02-05T13:06:55Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@bsafarli](https://forum.yunohost.org/u/bsafarli)
#### Post date: [February 5, 2020, 1:06pm UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229/1 "2020-02-05T13:06:56Z")
Hello, everyone!
I’ve installed yunohost on virtualbox with nat networking. Everyting is OK, but except outgoing mail. My ISP blocked port 25 so, sending mails on that port doesn’t work, but i’ve also forwareded port 587 from virtualbox.(it’s allowed by my ISP). But it didn’t work too.
---
### Author:  [@ljf](https://forum.yunohost.org/u/ljf)
#### Post date: [February 5, 2020, 3:41pm UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229/2 "2020-02-05T15:41:13Z")
You should test your port is really available from outside.
You can do this with an other internet connexion and running:
```auto
telnet YOURDOMAIN.TLD 587
```
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### Author:  [@bsafarli](https://forum.yunohost.org/u/bsafarli)
#### Post date: [February 6, 2020, 9:27am UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229/3 "2020-02-06T09:27:31Z")
I’ve checked. Both 587 port is open (in/out)
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### Author:  [@ljf](https://forum.yunohost.org/u/ljf)
#### Post date: [February 6, 2020, 2:33pm UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229/4 "2020-02-06T14:33:09Z")
> [@bsafarli](#):
>
> But it didn’t work too.
How have you checked “it didn’t work”
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### Author:  [@system](https://forum.yunohost.org/u/system)
#### Post date: [February 21, 2020, 2:33pm UTC](https://forum.yunohost.org/t/i-cant-send-mails/10229/5 "2020-02-21T14:33:13Z")
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