ilya's questions

We are running Ubuntu server on VPS. Some files were removed accidentally by placing unnecessary space this command:

rm -r /usr/local <directory to be deleted>

I know, that in most cases this directory is used by packages to place some part of their content.

Is there any where to recover deleted files and directories?

I suppose, that theoretically it should be possible. Some software can look through the list of installed packages, check presence of files in file system and recover or reinstall corrupted packages if their files are missing in /usr/local.

During our business we have to make regular mailing to our clients: invoices, information emails, etc.

Previously we received and sent emails using mail server of our hosting provider. But as the number of clients increased, we have to order VPS and install our own SMTP server their for performing our mailings.

So, now we have default provider mail server for receiving emails, let it be business.com. We have email accounts like [email protected], etc. We use this mail server to receive emails and manage our email accounts.

And we have SMTP server which is running on VPS. We use this SMTP only for sending emails with From addresses like [email protected]. VPS has default DNS records created by provider, let it be IP.AD.RE.SS <-> ip-ad-re-ss.provider.com.

Mailings are made using either desktop email clients or custom Java-based application which uses JavaMail for sending emails.

The problem is that most of emails sent by us are placed in spam folders in clients email accounts. Clients have their email in Gmail, Yahoo, Hotmail, etc.

Could you please tell what is the most probable reason and solution of described problem?

Are there any service in Intranet where we can send test email and get an answer with description why this email could be considered to be spam?