I have logwatch running on a number of servers and have had a message within the sendmail section on one server for some time but as everything was working I figured it could wait. I finally took the time to check it out this morning and I was correct in my assumption.<\/p>\n
[php]——————— sendmail Begin ———————— <\/p>\n
**Unmatched Entries**
\n STARTTLS=client, relay=mysmarthost.exchange.2007.server., version=TLSv1\/SSLv3, verify=FAIL, cipher=AES128-SHA, bits=128\/128: 9 Time(s)<\/p>\n
———————- sendmail End ————————-
\n[\/php]<\/p>\n
The server is configured to send all mail from the linux server to our internal MS exchange server.<\/p>\n
This message with the verify=FAIL is just saying that the CA authority for the certificate being used could not be verified. This is normal with self-issued certificates and is just a note.<\/p>\n
From my perspective the main thing is that the count of X time(s) is higher than 9 on a normal day as it is our Kayako HelpDesk<\/a> server and typically it is 300+ emails \/ ticket actions. So a low count indicates a problem.<\/p>\n Thanks to Alexander in the nginx forums<\/a> for the pointer and link to the relevant sendmail details on starttls.<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":" I have logwatch running on a number of servers and have had a message within the sendmail section on one server for some time but as everything was working I figured it could wait. I finally took the time to check it out this morning and I was correct in my assumption. [php]——————— sendmail Begin […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-278","post","type-post","status-publish","format-standard","hentry","category-linux-servers-and-software"],"_links":{"self":[{"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/posts\/278","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/comments?post=278"}],"version-history":[{"count":0,"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/posts\/278\/revisions"}],"wp:attachment":[{"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/media?parent=278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/categories?post=278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/howden.net.au\/thowden\/wp-json\/wp\/v2\/tags?post=278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}