SMTP Authentication

[ORiN]

Recently, some of my users feedback that they were unable to send out emails. It seems to be an issue that is eventually resolved by enabling SMTP authentication when sending emails.

How do I turn that off or make that optional on my server? I seems that many users still set up their email accounts without SMTP authentication by default.

 

[SeLLeRoNe]

You should rather fix the users that aren't able to send and teach them to use Auth (since is much more secure and prevent your server to become a spammer) rather than disbale a pretty much security feature.

Regards

 

[ORiN]

It would be for the best for all my users but it doesn't reflect well when this interrupted my users' daily running of their businesses without them having this issue previously. Any idea if my updating of Directadmin caused this?

 

[zEitEr]

Hello,

By default since the old times SMTP AUTH has been working in a way POP-BEFORE-SMTP (with a daemon da-popb4smtp), that would mean if you want to send emails via SMTP you need to check inbox with POP/IMAP client. These settings are defaults for 25 port and 587 (to connect to 587 you should always be authenticated).

The only one thing recently has changed for new installations and new versions of exim.conf, 127.0.0.1 was removed from a list of relays.

old:

hostlist relay_hosts = net-lsearch;/etc/virtual/pophosts : 127.0.0.1

new:

hostlist relay_hosts = net-lsearch;/etc/virtual/pophosts

But that should not affect those users who use webmails and offline programms to read/send emails. This would restrict sending emails from PHP/PERL scripts.

Thus, if you face an issue with exim auth you need either read exim logs and find reasons yourself, or hire somebody to fix it for you. Of course you may post here logs and other debugging info so we could check it and you will probably get a solution in a reply.