I don't know if this is a Drupal issue or it's only a matter of sendmail.
I have a dedicated server configured to host a single Drupal installation. I didn't configure it. But then I needed two sites and I decided to use that Drupal as multisite. Then, the only thing I said to those who configured the server was that they had to point the second domain to the same place as the first.
All things are working very well but the mail sending. The contact form e-mails sent from the first site are arriving without problem, but in the second site, the Drupal says that the e-mail has been sent, but it is not!
Do I have to configure anything extra in Drupal? If not, I know this is not a forum for sendmail, but if anyone can guide me a bit it would be fantastic.
I you need the apacahe error logs I can paste them here (now I'm not at home).
Thank you very much!