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Ariacx
Copper Contributor
May 26, 2023

Mac Outlook new version does not escape the period character at the beginning of a line as RFC said

Using the new version of outlook client side on mac, connecting to other mail service providers through IMAP/SMTP, there is a problem with the format of the sent mail
 
When Outlook uses the SMTP protocol to send emails, the eml encoding does not strictly follow the RFC standard. The RFC standard said that client should add another period when it found a line in EML starts with one period. But Outlook did not do this, resulting in a problem with the format of the sent mail.
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