[Rspamd] add dot-stuffing to bcc forwarding #5221
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If the
BCCrule finds at least onebcc_dest, the rule will retrieve the e-mail's content usingtask:get_content()and forward it via SMTP to the destination. The rule will use thesendmailmethod, which does not perform dot-stuffing. https://datatracker.ietf.org/doc/html/rfc5321#section-4.5.2If the e-mail contains a new line with a period, it won't be fully forwarded.
This PR addresses the issue by adding dot-stuffing before forwarding the mail to the
bcc_dest.Resolves: #5067