Problem with the send button

I’ve got the same problem. I’ve checked the request with firebug and there’s resulting a 503 Error, which means that a service is not available. This might be if there was a high load – e.g. because of a but who was sending a lot of mails via the form in a short time – in this case the server doesn’t respond for a while. That’s why the issue is only for a certain period and not continously. Most hosting providers have a Anti-Spam Filter setting which can prevent a 503 which was caused by the issue described above.

But in my case, this Anti-Spam filter is activated and you can also see in the Access Log, that there is no huge amount of POST requests with a 503 response – so in this case the load is not the limiting factor. Any ideas? … Hosting provider is Strato AG, Germany

Thanks a lot in advance.

@audeyoucom – Intermittent problems often indicates some emails are being seen as spam somewhere in the email process. This is usually due to email headers (in particular the From email address used) or email content.

Emails can be considered spam for a whole host of reasons and get rejected at many points in the email process in addition to your spam folder.

See Contact Form 7 Email Issues – this links to a much more comprehensive article which also covers emails being considered spam.