Analysis of information sources in references of the Wikipedia article "Email authentication" in English language version.
When the SMTP server accepts a message either for relaying or for final delivery, it inserts a trace record (also referred to interchangeably as a "time stamp line" or "Received" line) at the top of the mail data. This trace record indicates the identity of the host that sent the message, the identity of the host that received the message (and is inserting this time stamp), and the date and time the message was received. Relayed messages will have multiple time stamp lines.
There are three places that techniques can be used to ameliorate unintended SPF failures with mediators.
DomainKeys Identified Mail (DKIM) permits a person, role, or organization to claim some responsibility for a message by associating a domain name with the message, which they are authorized to use.
I think it's generally fine as long as you offer a mechanism for whitelisting of non-SRS forwarders.
When the SMTP server accepts a message either for relaying or for final delivery, it inserts a trace record (also referred to interchangeably as a "time stamp line" or "Received" line) at the top of the mail data. This trace record indicates the identity of the host that sent the message, the identity of the host that received the message (and is inserting this time stamp), and the date and time the message was received. Relayed messages will have multiple time stamp lines.
There are three places that techniques can be used to ameliorate unintended SPF failures with mediators.
DomainKeys Identified Mail (DKIM) permits a person, role, or organization to claim some responsibility for a message by associating a domain name with the message, which they are authorized to use.
{{cite book}}: |work= ignored (help)The Report, however, identified domain-level authentication as a promising technological development
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