[1.4.7] doesn't send out email

I have the latest version (Version 1.4.7) of the OpenCart installed in my server.

I have created email. I have tested email and it receives and sends email with no issues.

I also contacted to my web hosting company and they said there is no restriction to send out email from my server.

So...

In control panel,

I have the followings under settings>mail tab
=======================================
Mail Protocol: SMTP (I also have tried the "mail" option too)
SMTP Host: mail.mydomain.co.uk
SMTP Username: info@mydomainemail.co.uk
SMTP Password: xxxxxxxxx
SMTP Port: 25 (I have also tested 26)
SMTP Timeout:5
Alert Mail: Yes

I also have tried the following values under:

Settings>General tab
===================
E-Mail: info@mydomainemail.co.uk (when I type the same email that I have added under settings>mail tab
and click the "Save" button
then it gives me this error:
Required Data has not been entered. Check for field errors!
Under the "E-mail” filed shows in red,

E-Mail Address does not appear to be valid!

I tried with another email. I don't get that error.

However, I did some test shopping at my cart and also send email via "contact us" page.(I have tried it several times)
I never received an email.

PS.: I have another cart with the one previous version (Version 1.4.4) and have exactly the same setting with the same hosting company and that OpenCart shopping cart works.

I urgently need help.

Thanks for reading and also providing any help.

There were no changes in 1.4.7 to email. Not sure about 1.4.5 or 1.4.6. I'll see what I can find
Also can you try to make the email look more like your real one?
info@mydomainemail.co.uk
that worked fine in the email area of settings. Assuming you just replaced the real with a fake, but I assume your real one is slightly different

I am wondering if the email is very long and maybe the filed has been set for a short valu...

I think I found it out.. The email filed has been set to 32.. if the email address is bigger than 32 then it gives an error.

But I don't know where I can set this value bigger valu..

Can you please let me know where can I change this valu?

Thanks

Thanks for your kindly help.

It has been resolved.


admin/controller/setting/setting.php

In the "setting.php" file, I changed 32 to 64... then no errror anymore.

find:
$this->request->post['config_email'])) < 32))

replace with:
$this->request->post['config_email'])) > 64))