Getting error in webmail after send mail from contact form 7

I am getting an error in webmail after sending mail via contact form 7. But, there are no problem when I sent mail from gmail. I have been checked whole site by wordfence and no problem found. I used roundcube for webmail. I sent an email and received also from gmail. But there are an error in webmail after sending from my website via contact form 7. Then inbox has disappeared and couldn’t sent/received email from gmail also.

Note: My website in maintenance mode.

• This topic was modified 5 years, 3 months ago by Kaizur Ahmed.