All Questions
222
questions
-1
votes
0
answers
40
views
Attempting to set up an exim4 SMTP only server that can send out messages from two domains
I am attempting to set a STMP server that can send out messages from two different domains
Adding this line to the the config file (update-exim4.conf.conf)
PRIMARY_HOSTNAME = $sender_address_domain
...
- 1
0
votes
0
answers
36
views
authenticate users in smtp relay server exim4
I'm configuring relay SMTP server for sending email alerts from my local network. I need to send emails alerts from services witch run on my servers. And I need to authenticate it: each service should ...
- 1
0
votes
0
answers
65
views
postfix MTA seemingly benign I/O Error : postqueue fatal: output write error: Input/output error
I am getting the following message in my syslog exactly every 30 seconds. Everything is working but words like "Fatal" and "Input/output error" cause me an inordinate amount of ...
- 21
0
votes
3
answers
307
views
Is opening SMTP port with default Sendmail config safe?
My self-hosted web app (Ubuntu VPS) needs the ability to send noreply@ notifications to users when something goes wrong. I don't really need the ability to receive emails but I would like to comply ...
0
votes
1
answer
340
views
Can I generate and log output alerts for SMTP traffic using Suricata 7.0.2?
I have Suricata 7.0.2 IDS installed on a Linux Ubuntu 20.04 virtual machine. In my virtual environment, I have two virtual networks. In the first network, I have a mail user agent (Attacker) that ...
0
votes
3
answers
151
views
Postfix: How can I handle incoming mail for a single address, not the entire domain?
I've gotten my employer to configure the company-wide Exchange server to forward [email protected] to [email protected], a host I control. So far, so good. My Postfix configuration ...
- 131
-1
votes
1
answer
692
views
What could be causing PowerMTA not to forward emails over port 465 SSL...?
We have a PowerMTA server that receives incoming e-mail. and forward it to external SMTP server that's not running PowerMTA i tried to do it using port 587 and port 25 both working fine and emails ...
0
votes
1
answer
478
views
iptables - port 25 not getting traffic even though default policy is ACCEPT and all rules are flushed
I am having a problem that's driving me up the wall. I have a server, where after several attempts at various iptable rules, I have flushed iptable rules and set default policy to accept.
The output ...
- 121
0
votes
1
answer
415
views
exim4: how to add an address as BCC to all the outgoing emails?
I'm working on an Ubuntu 20.04 web server where exim4 is used to send emails from the PHP application running on it.
Due to diagnostic and archival needs, I need to configure exim4 to automatically ...
0
votes
1
answer
629
views
Roundcube can send mails but doesnt receive mails
SYSTEM INFORMATION
OS type and version: Debian Linux 10.13
Webmin version: 1.941
Virtualmin version: 6.08
In the past I had no problems sending and receiving mails on my virtual domains I think all ...
- 11
-2
votes
1
answer
446
views
Postfix: Failure sending mail. Connection refused
I have Postfix server installed on my Digitalocean droplet along with my ASP.Net WebApi on docker container.
When I try to send mail from my ASP WebAPI app I get Connection refused exception. Here ...
0
votes
1
answer
86
views
SMTP hub or redirector, is this possible?
Situation:
I need to be able to set one SMTP server set of details into some software that sends out emails. However, the software sends emails from many different sender domains, all hosted on ...
1
vote
2
answers
2k
views
How to make Postfix listen on few IP addresses with correct certificates?
I've got problem setting up postfix to listen on few (3 actually) IP addresses, on port 25, using correct SSL certificates.
Background: I'm using Debian 11, with Postfix (v 3.5.6 from repo)/Dovecot ...
- 13
0
votes
1
answer
357
views
"Certificate is bad" in exim smarthost setup
I am configuring a local exim instance to use an existing server (also exim) as a smart host relay. This is as verbose as the logs seem to be:
2022-06-11 23:59:35.745 [767692] SMTP connection from [...
- 11
0
votes
0
answers
2k
views
Sender dependent relay with transport maps in postfix
We have some SMTP server in our company. We have transport maps in which we define what domains send to other smtp server. Now, we need sender dependent config for some users. The users are using same ...
- 1