我是exim4的新手。 我有这样的configuration：
.ifdef SA_ENABLE warn !authenticated = * hosts = !127.0.0.1/24 condition = ${if < {$message_size}{1K}} spam = SA_SPAMD_USER:true add_header = X-Spam_score: $spam_score\n\ X-Spam_score_int: $spam_score_int\n\ X-Spam_bar: $spam_bar\n\ X-Spam_report: $spam_report warn !authenticated = * hosts = !+relay_from_hosts spam = SA_SPAMD_USER:true/defer_ok add_header = X-Spam_score: $spam_score\n\ X-Spam_score_int: $spam_score_int\n\ X-Spam_bar: $spam_bar\n\ X-Spam_report: $spam_report set acl_m4 = $spam_score_int condition = ${if and{{<{$message_size}{100K}}{<{$acl_m4}{SA_SCORE_REJECT}}} {yes}{no}} logwrite = From $sender_address to $recipients X-Spam_score: $acl_m4. deny condition = ${if and{{>{$message_size}{10K}}{!eq{$acl_m4}{}}{>{$acl_m4}{SA_SCORE_REJECT}}} {yes}{no}} message = Content analisis tool detect spam (from $sender_address to $recipients). Contact SA_ABUSE_ADDR. .endif 如果分数高于/低于一个值，我该如何调整添加X-Spam-Flag（是或否），如果超过其他值则拒绝。 （目前SA_SCORE_REJECT = 50）
如果我想强制执行两个单独条件的AND，我觉得把它们写成两个单独的条件语句就更加清楚了。 我认为这将工作：
# Define constants SA_MESSAGE_SIZE=100K SA_SCORE_FLAG=50 SA_SCORE_REJECT=100
和
.ifdef SA_ENABLE warn !authenticated = * hosts = !127.0.0.0/8 : !+relay_from_hosts condition = ${if <{$message_size}{SA_MESSAGE_SIZE}} spam = SA_SPAMD_USER:true set acl_m4 = $spam_score_int add_header = X-Spam_score: $spam_score\n\ X-Spam_score_int: $spam_score_int\n\ X-Spam_bar: $spam_bar\n\ X-Spam_report: $spam_report warn !authenticated = * hosts = !127.0.0.0/8 : !+relay_from_hosts condition = ${if <{$message_size}{SA_MESSAGE_SIZE}} condition = ${if >{$acl_m4}{SA_SCORE_FLAG}} add_header = X-Spam-Flag: YES logwrite = From $sender_address to $recipients X-Spam_score: $acl_m4. # Reject spam messages with score*10 over SA_SCORE_REJECT=100 deny !authenticated = * hosts = !127.0.0.0/8 : !+relay_from_hosts message = Content analysis tool detect spam (from $sender_address to $recipients). Contact SA_ABUSE_ADDR. condition = ${if <{$message_size}{SA_MESSAGE_SIZE}} condition = ${if >{$acl_m4}{SA_SCORE_REJECT}} logwrite = From $sender_address to $recipients spam message was rejected X-Spam_score: $acl_m4. .endif
$ spam_score_int = 100等于$ spam_score = 10.0