SMTP and LMTP protocol channel options

For additional channel options affecting the SMTP protocol, specifically those relating to the SMTP extensions  AUTH or STARTTLS (SASL or TLS use), see  TLS and SASL channel options.

For additional channel options affecting TCP/IP connections and DNS lookups, see TCP/IP connections and DNS lookups channel options.

See also:
 * allowetrn Option
 * bccserver Option
 * binaryclient Option
 * binaryserver Option
 * blocketrn Option
 * checkehlo Option
 * checkrrvs Option
 * chunkingclient Option
 * chunkingserver Option
 * conditionalpassthrough Option
 * deferralrejectlimit Option
 * deliverbychannel Option
 * deliverbymin Option
 * destinationnosolicit Option
 * disableetrn Option
 * disconnectbadburllimit Option
 * disconnectbadcommandlimit Option
 * disconnectcommandlimit Option
 * disconnectrecipientlimit Option
 * disconnectrejectlimit Option
 * disconnecttransactionlimit Option
 * domainetrn Option
 * domainvrfy Option
 * ehlo Option
 * eightbit Option
 * eightnegotiate Option
 * eightstrict Option
 * expnallow Option
 * expndefault Option
 * expndisable Option
 * flagtransfer Option
 * futurerelease Option
 * ignorerrvs Option
 * lmtp Option
 * lmtp_cr Option
 * lmtp_crlf Option
 * lmtp_crorlf Option
 * lmtp_lf Option
 * localvrfy Option
 * loopcheck Option
 * mailfromdnsverify Option
 * msexchange Option
 * mtprioritiesallowed Option
 * mtprioritiesrequired Option
 * nobccserver Option
 * nobinaryclient Option
 * nobinaryserver Option
 * nochunkingclient Option
 * nochunkingserver Option
 * noehlo Option
 * noloopcheck Option
 * nomailfromdnsverify Option
 * nomsexchange Option
 * noproxyprotocol Option
 * nosendetrn Option
 * nosmtp Option
 * noturn Option
 * notary Option
 * nonotary Option
 * novrfy Option
 * noxclient Option
 * passthrough Option
 * proxyprotocol Option
 * recipientcutoff Option
 * recipientlimit Option
 * refuseehlo Option
 * refusenotary Option
 * rejectsmtplonglines Option
 * relay Option
 * sendetrn Option
 * sevenbit Option
 * silentetrn Option
 * smtp Option
 * smtp_cr Option
 * smtp_crlf Option
 * smtp_crorlf Option
 * smtp_lf Option
 * sourcenosolicit Option
 * streaming Option
 * submit Option
 * transactionlimit Option
 * truncatesmtplonglines Option
 * turn Option
 * turn_in Option
 * turn_out Option
 * utf8header Option
 * utf8negotiate Option
 * utf8strict Option
 * vrfyallow Option
 * vrfydefault Option
 * vrfyhide Option
 * wrapsmtplonglines Option
 * xclient Option
 * xclientrepeat Option
 * xclientsasl Option
 * xclientsaslrepeat Option
 * TLS and SASL channel options
 * TCPIP connections and DNS lookups channel options
 * Functional group list of channel options