Hi Peter, Peter Nicolai Mathias Hansteen writes: > It's interesting that the subject turns up here, when there is a > fresh (and good IMO) blog post out about email address validation out, > "Your E-Mail Validation Logic is Wrong" > <https://www.netmeister.org/blog/email.html> by Jan Schaumann
This seems to suggest the problem is in the opposite direction: that OpenSMTPD is wrong to reject "user"@example.com, and perhaps also wrong to not map "user"@example.com to u...@example.com. -- Anthony J. Bentley