smtp not working for some users

S

sander815

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Jul 29, 2003
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since i have installed SA, and disabled the SA interface in the users control panel, i get complaints that people can't send email through their smtp.domain.com server. They get authentication errors.

in their home dir theres still the .spamassassin folder. Does that have to do somethging with this?

their ips are showing in pophosts

i already told them to use their ISPs smtp, but for some reason they refuse to do that
 
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Their own ISPs may have blocked their email from your server; many ISPs block all outgoing email on port 25 that doesn't go through their servers.

Because ISPs start and stop this behavior all the time, it could appear as an intermittent problem.

Here's how to check:

Watch your mail log as they try to send email:

# tail -f /var/log/exim/mainlog

If you don't see them hitting your server at all, then their ISP is blocking the connection and they'll have to use your ISPs server, or change ISPs.

If you do see them hitting your server, try watching the reject log for any possible reject reasons:

# tail -f /var/log/exim/rejectlog

as they again try to send email.

Jeff
 
The new Exim version requires SMTP authentication, meaning sending your username to the server upon using the SMTP server.

Prior Exim versionw did not require this.

With regards,

:)
 
All versions of Exim used in DA have required either SMTP AUTH or authorization by POP before SMTP. (I wrote the exim.conf file for DA.)

Are you saying the latest version won't work with the POP before SMTP that's written into the exim.conf file?

Jeff
 
Is [email protected] being used as a return address by one of your clients? If so, is that client using POP to check email before attempting to send email?

If not, is the client using SMTP AUTH?

Jeff
 
they tell me they pop before they send mail...i also see their ips in the pophosts file

i told 1 user to use smtp_auth and for him its working again

i tested myself several imes, but can't reproduce the same error...only when i don't pop before sending mail

i have no idea yet what happened
 
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