In regards to email...is reverse DNS performed on, the server hostname/IP or the domain of the "from" field
Question 1a: In regards to my server-sent web-form email...is reverse DNS performed on, the sending server's hostname/IP or the domain of the "from" field? If I'm asking this wrong please correct me.
Question 1b: IF the reverse DNS is performed on the sending server's hostname/IP, can I then use the email of the person who filled out the online form in the "from" and "reply-to" fields without it getting filtered as spam?
A few more details about these questions:
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I am using a Fedora dedicated server through GoDaddy. I have been having trouble getting server-sent web-form emails to be delivered without getting it spam filtered. I have finally changed my server's hostname to be my-BUSINESS-domain.com and now emails are doing better since it was blahblah.secureserver.net,
https://www.experts-exchange.com/questions/23816723/Linux-server-generated-email-from-web-forms-discarded-as-spam-sendmail-php.html?cid=239&anchorAnswerId=22733029#a22733029
Question 1b: IF the reverse DNS is performed on the sending server's hostname/IP, can I then use the email of the person who filled out the online form in the "from" and "reply-to" fields without it getting filtered as spam?
A few more details about these questions:
--------
I am using a Fedora dedicated server through GoDaddy. I have been having trouble getting server-sent web-form emails to be delivered without getting it spam filtered. I have finally changed my server's hostname to be my-BUSINESS-domain.com and now emails are doing better since it was blahblah.secureserver.net,
https://www.experts-exchange.com/questions/23816723/Linux-server-generated-email-from-web-forms-discarded-as-spam-sendmail-php.html?cid=239&anchorAnswerId=22733029#a22733029
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Sadly for your issue, this is something that each sending mailserver must do in order to function in the world of email. If this is one particular customer/contact . . . it's an easy fix to let them know.
If it is a bunch, see if there is a way to reduce your spam filter level or whitelist the domain (@domainname.xxx) where it is originating.