On Tue, Nov 16, 2010 at 08:50:47PM +0100, Ralf Hildebrandt wrote: > I received no error message; but when using a domain literal > exceeeding 63 characters I received an error.
Domain literals are in the domain-part. Not the local-part. > But where IS the actual limit in postfix? > max_line_length - lenght(RCPT TO:<>) ? This certainly limits the length of an SMTP command. Unless I missing seeing all these years, Postfix has no explicit limit on address length. -- Viktor.