I am trying to send an email to a recipient with an email address starting with a hyphen/dash, e.g. -localpart@example.com
The recipient claims the mail address is correct.
mail.log shows:
postfix/smtpd[26055]: warning: Illegal address syntax from ...[...] in RCPT command: <-localpart@example.com>
I am using Postfix 2.11.3
Any idea how I can send emails to such an address?
Best Answer
You can configure Postfix to accept such addresses with option
allow_min_user = yes
.The postconf documentation also explains why the default is to reject such addresses: