contact form work with one email but not with another

See FAQ

• After submitting the form, I get an error message stating “Failed to send your message”. What is wrong?
• I get an error message with a red border. So, how can I solve this?
• I see a response message “Your message was sent successfully” with green border, but I never receive a mail for that.

I have the same issue. Contact form is rejecting most emails. It will allow my email to go through which is an @chilla.net email. But when I test an @gmail.com, @comcast.net and others, the mail is rejected as Spam.

We do use Akismet and have for over a year, along with CF7 with no issues. I tried adding the Akismet validation fields noted in your article and that didn’t fix or change anything. I don’t have any cache running on the site I am testing. I tried deactivating Akismet – that made no difference. I tried setting the sender email to an admin email and that made no difference.

It used to work fine, I think it stopped on the latest WP update, but your support documents do not suggest how to correct the issue – they only point out that the mail is being rejected as spam, but it is rejecting legitimate emails.

Please advise how to correct this issue quickly, so I don’t have to replace this plugin on many, many client sites. Thanks!!

@dmcavins – As per the Forum Welcome, please post your own topic.

Posting in an existing topic and taking over the original posters question is generally considered inappropriate.

Added to which, your problem – despite any similarity in symptoms – is likely to be completely different.

Hi Takayuki Miyoshi, I am receiving error in BLUE color ??

What does this indicates? Mails are going to custom mail id but not going thru gmail or any other commercial domains.

@buzztone – my apologies. I have already found another form plugin that I like much better. Ninja Forms. I read all the articles given above and they offer no solution or indication that there is a problem with legitimate mail being rejected.