Linux - GeneralThis Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
I am trying to configure sendmail “smart_host with authentication” on a RedHat 7.2 mail server. I have an ISP that is blocking port 25 and I cannot send emails from my server. I am trying to configure sendmail my mail server to relay its mail to my ISP’s mail server. I want my ISP’s mail server to think it is receiving mail from an email client configured to send mail to their email server. I am looking for configuration examples if possible using sendmail.mc to create a new sendmail.cf file. I think I need to use smart_host to relay mail (not sure) but I am a little weak on this configuration. I also need help in configuring sendmail to authenticate to the ISP server to think it is mail coming from me.
Yes, you do need to use smarthost. That way your server will act like a client when sending email out and it will work with your ISP. Just make sure the servername is correct and you should be ok.
Thanks for the input, but..
Yes I can see now how I need to configure the smart host in sendmail.ms, but what about the user name and password. If sendmail is acting as a client of sorts in this case don't I need to provide a user name and password for smart_host with authentication? Doen't the ISP smpt server expect some sort of authentication?
This is a little messages to convey copious amounts of satisfaction to Linux Questions and David Phillips for taking the time to help out a linux colleague.. If you only knew how many headaches I have gone through trying to find a way around my ISP blocking port 25. Ouch it hurt!
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.