|Bounce username. Default: MAILER-DAEMON.|
|Bounce host. Default: me, if that is supplied; otherwise the literal name bouncehost, which is probably not what you want. If a message is permanently undeliverable, qmail-send sends a single-bounce notice back to the messages envelope sender. The notice is From: bouncefrom@bouncehost, although its envelope sender is empty.|
|Maximum size (in bytes) of bounce messages. Bounce messages exceeding this limit will be truncated. Default is 0; which means no limit.|
|Maximum number of simultaneous local delivery attempts. Default: 10. If 0, local deliveries will be put on hold. concurrencylocal is limited at compile time to 120.|
|Maximum number of simultaneous remote delivery attempts. Default: 20. If 0, remote deliveries will be put on hold. concurrencyremote is limited at compile time to 120.|
|Double-bounce host. Default: me, if that is supplied; otherwise the literal name doublebouncehost, which is probably not what you want.|
|User to receive double-bounces. Default: postmaster. If a single-bounce notice is permanently undeliverable, qmail-send sends a double-bounce notice to doublebounceto@doublebouncehost. (If that bounces, qmail-send gives up.) As a special case, if the first line of doublebounceto contains a @ or an empty line qmail-send will discard all double-bounces.|
|Presumed domain name for addresses without @ signs. Default: me, if that is supplied; otherwise the literal name envnoathost, which is probably not what you want. If qmail-send sees an envelope recipient address without an @ sign, it appends @envnoathost.|
|List of domain names that the current host receives mail for, one per line. Default: me, if that is supplied; otherwise qmail-send refuses to run. An address user@domain is considered local if domain is listed in locals.|
|List of domain names where the percent hack is applied. If domain is listed in percenthack, any address of the form user%fqdn@domain is rewritten as user@fqdn. user may contain %, so the percent hack may be applied repeatedly. qmail-send handles percenthack before locals.|
|Number of seconds a message can stay in the queue. Default: 604800 (one week). After this time expires, qmail-send will try the message once more, but it will treat any temporary delivery failures as permanent failures.|
List of virtual users or domains, one per line.
A virtual user has the form
user@domain:prepend, without any extra spaces.
qmail-send sees the recipient address
user@domain, it converts it to
prepend-user@domain and treats it as local.
A virtual domain has the form domain:prepend. It applies to any recipient address at domain. For example, if
virtualdomains may contain wildcards:
virtualdomains may also contain exceptions: an empty prepend means that domain is not a virtual domain.
qmail-send handles virtualdomains after locals: if a domain is listed in locals, virtualdomains does not apply.
nice(1), addresses(5), envelopes(5), qmail-control(5), qmail-log(5), qmail-queue(8), qmail-clean(8), qmail-lspawn(8), qmail-rspawn(8)