Exim 4.98.2 -Now Issues in Outlook

[bcx]

I've updated Exim via CustomBuild 2.0 and the setup completed successfully. However, since the update, Outlook is no longer able to connect to the server for incoming mail. Sending still works fine.


New emails are still being received in Roundcube, so the mail delivery itself appears unaffected. I haven’t changed any other settings.


Given that none of my Outlook mailboxes can retrieve mail as it cannot connect to the server is says :s

Could you help identify what might be causing this? As i'm trying to solve it for almost 8 hours straight and i can't find a sollution. Thank you in advance.

 

[zEitEr]

Hello,

Try and enable TLS encryption for POP/IMAP in your mail program.

Reading of emails is done over POP/IMAP protocols, which are managed by Dovecot. When updating Exim, dovecot config was probably updated too.

The Dovecot configuration is updated to block non-encrypted connections to the POP and IMAP services (since DA Version 1.678).

Related:

- https://docs.directadmin.com/change...authentication-over-non-encrypted-connections

 

[dorucrisan]

I just can't update or install Dovecot, neither on old/working servers nor on new server/fresh install. It may be related to that.
I use DA for my work (we host our web shops on local servers with DA). Just too many issues recently, please kindl solve. Thank you.

Updating dovecot configuration files...
/proc/self/fd/3: line 485: /usr/sbin/dovecot: No such file or directory
dovecot is not installed, install it using:
da build dovecot

 

[bcx]

For me

Hello,

Try and enable TLS encryption for POP/IMAP in your mail program.

Reading of emails is done over POP/IMAP protocols, which are managed by Dovecot. When updating Exim, dovecot config was probably updated too.

The Dovecot configuration is updated to block non-encrypted connections to the POP and IMAP services (since DA Version 1.678).

Related:

- https://docs.directadmin.com/changelog/version-1.678.html-disable-pop-imap-authentication-over-non-encrypted-connections

For some reason i reset one of the mailbox passwords and now 993 port is working. I changed all ports to this and now its connected again.

I think i unblocked non-encrypted in the past.. or something.

 

[bcx]

I received a call from a client reporting an issue.


I set up forwarding from his work email to two of his personal email accounts, one with @telenet.be (his internet provider) and another with @gmail.com.


When I send a test email from my address to his work email (which has the forwards set up), he receives it without any issues. (FYI my email is handled by the same server)


However, when someone sends an email from a Hotmail.com or Gmail.com address, the forwarding doesn't work. The messages get stuck and are marked as frozen in the Mail Queue Administration.

one of the frozen email says this in the log:

2025-06-18 15:31:11 Received from <> R=1uRssf-0000000GoOS-3Eqv U=mail P=local S=6556 T="Mail delivery failed: returning message to sender"
2025-06-18 15:31:11 bounce+17047f.2cc464-info=[email protected] F=<> R=virtual_aliases:
*** Frozen (delivery error message)

[email protected]
(ultimately generated from [email protected])
all hosts for 'telenet.be' have been failing for a long time (and retry time not reached)

 

[zEitEr]

The @telenet.be must be blocking your server's IPs. I am not even sure, you can get your IP unblocked in such a case.

And Gmail.com does not like forwarded emails, even if you comply their antispam rules. Check their sending rules and make sure you comply them. And even better use PULL method instead of forwarding, it is when you configure Gmail to download emails from your server using POP/IMAP.