Sendmail dnl what does it mean

Active Oldest Votes. There's a subtle but important difference between dnl and here. Improve this answer. Michael Hampton Michael Hampton k 39 39 gold badges silver badges bronze badges. You don't have to end a line with dnl but you'll end up with extra blank lines in sendmail. And yes, if you want something to take effect, it must actually be present in sendmail. MikeB m4 is case sensitive - DNL is not dnl. Sorry but I have seen a few stupid m4 bugs in answears with very high scores in Stack Exchange sites.

Filip Thanks. The site wouldn't let me edit the question so I re-added it. TekOps TekOps 61 3 3 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog. Does ES6 make JavaScript frameworks obsolete?

So running this should work for you: Code:. Thanks for the reply but your fix sadly doesn't work for me. Any other idea? It's the same as before. Domain not found. The full log line would have been helpful.

Is it correct that ubuntu -server. Just before the error code do you see IP of your smarthost "companydomain. Can you connect to your smarthost and just run the following giving it's output: Code:. Full log line: Code:. Curious, when using sendmails f option the envelope sender address should have changed and so the domain seen in the logs What is the from address of the last deffered mail seen in the logs?

It should be close to the error messag with the same timestamp. Click to expand Which distribution are you using and what is the full path of your maillog? Do you get anything back when you run the following against your maillogs? Which distribution are you using. From logs looks like your are using Ubuntu. The following command looks for the error in question in the current log and gathers all depended lines for it together: Code:. Regarding time, just validate that your system time is correct running: date.

When date is correct i assume you already checked that syslog and sendmail are running. If not just check for them with: Code:. In reality Sendmail is very easy to configure.

Here are a few quick tips to help you along. There should be a file named sendmail. Editing this file is not only the proper way to configure Sendmail, but it is also much easier than trying to make your changes in sendmail.

To reduce the amount of spam you receive add the following line toward the bottom of your sendmail. This will check each incoming connection against one of the most reliable RBL s and if the IP address of the incoming connection is on that list it will bounce the message backing saying:. Some Linux distributions have Sendmail configured out of the box to accept E-mail from domains which do not have proper DNS information.