Troubleshooting Tip: Situations in which an email may become unreadable
| Description | This article describes how an invalid line can corrupt an email header. |
| Scope | FortiMail. |
| Solution | Some users reported that certain emails are not fully readable. Specifically, parts of the header that appear within the email body become unreadable - for example, a blank line containing a semicolon (;) that was added by the previous relay.
The sending or relay system must be corrected to prevent insertion of invalid or standalone lines (such as a blank line with ';') within the header section. According to RFC 5322 section 2.1, an empty line (or an invalid header line) indicates the end of the header section. |
