From: Omar Polo Subject: Re: sendmail: add -bv flag To: "Kirill A. Korinsky" Cc: OpenBSD tech Date: Fri, 07 Feb 2025 23:11:48 +0100 Hello, Sorry for the delay. Kirill A. Korinsky wrote: > Omar, > > I'd like to add -bv flags to sendmail wrapper which is well known as a way > to validata email address. > > Right now I need it to add a custom email to calendar(1), but it can be > quite useful by its own. > > What do think? I don't have a strong opinion on this. I think this at least is missing the sendmail.8 bits though; but then if i go read postfix' sendmail(8) (or at least the version of the manpage available at man.archlinux.org) the description for -bv seems slightly different than what your diff does: -bv Do not collect or deliver a message. Instead, send an email report after verifying each recipient address. This is useful for testing address rewriting and routing configurations Have to admit that I kind of agree with what deraadt@ said in the other thread, if you typo the mail you don't get deliveries, even if i also see mvs@ point in "sendmail: command failed" not being particularly enlightening. Since sendmail just exit with a nonzero exit status, we maybe can get away without -bv and you could just log something like "calendar: failed to send mail to $ADDRESS" in that case.