All Questions
Tagged with email-server exim
167 questions
0
votes
0
answers
68
views
Postfix additional character for + sub-addressing
For many years already our mailservers have supported the plus + character in the local-part of an e-mail address as a separator for sub-addressing & RFC 5233 which allows our users create ...
- 82.5k
0
votes
1
answer
50
views
Exim4 with Too Many Connections
In this post I asked what caused the "Too many connections" error in Exim4.
Using smtp_accept_max can indeed help, but it still doesn't help me 100%. Because there could be a DDoS attack and ...
- 289
0
votes
0
answers
365
views
AlmaLinux blocking outgoing connections
I have a new AlmaLinux installation that is blocking outgoing connections to most ports, with the exception of a handful. I notice this mostly because the server runs Exim and no e-mail can be sent on ...
- 446
1
vote
0
answers
41
views
Exim rate limits and Amazon SES
Amazon SES sets certain limits for using its mail service. For example, sending a maximum of 14 emails per second or up to 50 recipients per email sent (to, cc or bcc).
What configuration can be ...
- 11
1
vote
2
answers
98
views
Cannot get Exim to verify DANE for remote smtp
I am trying to configure Exim to try DANE before deciding to deliver unencrypted mail to remote hosts.
My general Exim configuration has: dns_dnssec_ok = 1.
For the dnslookup router: ...
- 95
-1
votes
1
answer
141
views
Estimate amount of emails handled by Exim
I have two mail servers that use Exim, one is dedicated to receiving mail and the other is dedicated to sending mail.
How can I count how many emails a server sent in a month and how many emails were ...
- 289
0
votes
0
answers
116
views
Dovecot and Exim config to support domain alias
I use Dovecot and Exim in my mail server, and auth them against MariaDB. The server keep mails for multiply mail domain, and it works this way for years.
Now I need to migrate (rename) one of mail ...
- 854
0
votes
1
answer
516
views
How can I stop this kind of exim attack?
I has been search here, BUT no topic about my question (they just ask for their email was rejcted, but this time, not my email was been reject), it seem someone try to send spam out via my server, ...
- 1
0
votes
0
answers
141
views
Exim4 how to relay some recipients to another server
I have a domain managed by two servers, they have different mailboxes but the same domain.
How can I set Exim to forward some recipient email to the second server?
I checked many tutorial but they ...
- 1,364
0
votes
1
answer
219
views
Cannot send email using Exim and Dovecot
I've been trying to debug this issue since last week, but I have no clue on what's going on, I have tried to find the answers myself but no luck.
I've been trying to send emails, from [email protected] ...
- 141
0
votes
1
answer
95
views
Hwo to trim email addresses in Exim?
I have a list of emails from client accounts that are built like this: [email protected]
I have tied looking into configs but haven't found such an option.
How do i trim in Exim those emails?...
- 135
2
votes
1
answer
2k
views
How to configure EXIM to check SPF record for incoming emails and add 'Received SPF' header to the incoming emails?
I'm playing with Exim and created a mail server that can accept and send emails alright. Now, I want to enable SPF checking for every incoming email so that a Received SPF header is added to these ...
-1
votes
1
answer
537
views
Email forwarding from exim on debian
Do it looks like Debian (10) out of the box comes with exim?
mini31 # apt list --installed | grep exim
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
exim4-base/...
0
votes
0
answers
585
views
Error setting up SMTP via Exim4
I just started at my current role and I'm the only IT guy...
I have a server that is used to send emails to a local smarthost but they just switched to using Office 365 and it "never worked" ...
0
votes
1
answer
2k
views
Is it possible to trigger a shell script on incoming emails, can it be done without services like dovecot, postix, etc? [closed]
This question more is for learning purpose.
I'm exploring ways to develop a small email server (in + out).
I have a domain that points to my server as well as mx records and all that stuff...
I also ...
- 139
0
votes
1
answer
205
views
Exim established many connections to strange ips
I installed VestaCP and used their mail server for my domain mails. But when I run netstat on my server,it shows some strange connections. There are no problems with my mail server until now, I just ...
- 115
0
votes
1
answer
308
views
Is it possible to determine the mailserver software (MTA) used based on a domain?
Given the domain from the MX record, is it possible to get the name of the mailserver software (MTA) used on this server?
Example
MX record for gmail.com returns (among others) gmail-smtp-in.l.google....
- 101
1
vote
0
answers
632
views
PHP mail function on Google Cloud Compute Engine?
I have a php website hosted on Google Cloud Compute Engine. I also have a paid Google Workspace account for my emails, etc. I would like to use the mail function in php to receive emails from my ...
google-cloud-platform
0
votes
1
answer
1k
views
How to forward email to GMAIL using EXIM4
I have a new exim4 server and I need to forward some addresses to a gmail address.
[email protected] --> [email protected]
I have created the router with driver = redirect and everything ...
- 1,364
0
votes
0
answers
268
views
Send Monit E-Mails via Exim
I installed monit on an Ubuntu 18.04 server and I would like to configure it to send e-mails to my personal e-mail address. I heard that I can send them via the installed exim. However, it does not ...
- 103
3
votes
2
answers
2k
views
Remove IP and username from Exim mail headers
I have an Exim4 running on Debian which I use for transactional emails from my other servers protected by CloudFlare. Every transactional email sent from it has an IP address of the sender (1.2.3.4) ...
- 31
0
votes
0
answers
801
views
Exim wrongly resolve the host that authenticates via smtp, when sending outgoing mail from PHP and my server's domains?
I have a server with WHM and Cpanel in OVH Canada with a main ip +4 additional ipv4, 2 of which are assigned to their corresponding domain and 2 are unused:
suppose the ips are:
144.217.55.5 (main)
...
0
votes
1
answer
1k
views
Dovecot + Exim = relay not permitted
I have setup a simple mail server with Exim and Dovecot. Since obviously I don't want to have an open relay server, I want to restrict the access from outside. I figured the following configuration:
...
- 1
1
vote
1
answer
2k
views
Exim4 Rejected RCPT: Unrouteable address when using data lookup
I'm trying to redirect emails originally sent to [email protected], to the [email protected].
I have aliases file:
hello: [email protected]
And the following routers:
local_router:
driver = ...
- 388
0
votes
2
answers
398
views
Security when SMTP Relay is allowed from the Private Address Blocks
Is it safe to allow SMTP Relay from the private address blocks?
10.0.0.0/8
127.0.0.0/8
172.16.0.0/12
192.168.0.0/16
My gut feeling is that it's probably OK, however I'm not sure if that will not ...
- 388
0
votes
1
answer
255
views
exim4 I don't understand why my queue list fills again
I have stopped exim4 by /etc/init.d/exim4 stop but when I run exim -bp my queue list continues to fill. I don't understand why, can someone explain what I'm not understanding?
- 149
0
votes
0
answers
133
views
Cant find Exim 4 'helo_verify_hosts' configuration setting
I'm trying to recreate the Exim GHOST vulnerability over my local network and have installed Debian 7 with Exim version 4.8. However I can't seem to find where the helo_try_verify_hosts or ...
- 1
0
votes
1
answer
233
views
Huge amount of imap-login netstat
When I run a netstat -plantu I have a huge amount of ESTABLISHED imap-login, perhaps 50 or 60 connection.
Some connections have in column Send-Q a big number like 3211206 or 114636 for example, and ...
- 149
1
vote
1
answer
3k
views
Exim conditional logic
I am trying to have exim check the domain of outgoing and incoming mails against a domainlist. If the FROM address of the outgoing mail and the TO/CC/BCC address of the incoming mail are not in the ...
- 135
0
votes
1
answer
994
views
How to send subdomain emails to main domain?
I created a mail server (mail.mydomain.com) and can send emails from [email protected] without any issue.
But when some email addresses (which I tried to send email to) fail, bounce messages try ...
- 103
4
votes
3
answers
5k
views
Mail stuck in exim queue for no reason?
On my server, mail is sometimes delayed for apparently no specific reason.
In this example two mails were generated by systemd-cron about failing cron jobs:
mailq output (domains edited):
3m 1.9K ...
- 223
0
votes
1
answer
2k
views
Cannot send mails to different domain with mail server in HostGator and website in Digital Ocean (From header is missing)
Recently I moved from HostGator with cPanel to a Digital Ocean droplet.
I still want to use the email service from HostGator.
So in DigitalOcean I added an A record pointing to HostGator IP, and MX ...
- 111
0
votes
2
answers
801
views
Alias to forward mail to all addresses for a domain using Exim
I'm using Exim v4.91 in a CentOS 7 server hosting more than one domain and I'd like to set up a group address/alias to forward mail messages to all addresses of a given domain (one for every domain). ...
- 77
0
votes
2
answers
139
views
Relaying mail for a machine with port 25 blocked [closed]
I recently moved and had to start using a new residential ISP (my old one doesn't serve the new address yet). To my dismay, the new ISP has no option of unblocking the TCP/25 port even when you buy a ...
- 416
0
votes
1
answer
522
views
exim filter not working on long emails
I was trying to set a file extension based filter in exim.
if
$message_body contains "pdf.gz"
or $message_body contains "pdf.arj"
This filter does work on small mail, such as mail with only test ...
1
vote
1
answer
4k
views
Unroutable address when sending email with exim from vm1 to vm2
I am trying to send emails from virtual machine 1 to virtual machine 2 but I get the error Unroutable address and more specifically dnslookup_relay_to_domains router declined for user@lab1
Looking at ...
- 173
0
votes
0
answers
335
views
(Debian) Running two mail- and web- servers at the same time in different docker containers
I´ve setup a Debian Webserver with two docker containers:
- a laradock container (laradock.io - Documentation availible at laradock.io).
- a mailcow container (mailcow.email - Documentation ...
- 113
0
votes
1
answer
2k
views
How do I fix messages frozen by exim due to a typo in recipient?
I have a couple of frozen messages in my exim queue which have a misspelled recipient, e.g. [email protected] instead of [email protected].
Apparently they could be fixed by correcting the ...
- 126
0
votes
1
answer
322
views
Exim outbound mail - whitelist domains
I am using Exim version 4.91. How do I configure it to block outbound emails except for few domains?
Basically, the mail server should only send emails to users on example.com, example.net & ...
- 1
0
votes
2
answers
509
views
Exim: Relay unknown recipients to another server
Question
Can I force Exim to relay mails with unknown recipient to another host?
Scenario
I want to stage the Exim to Exchange migration in a way that would allow me to move individual accounts ...
2
votes
1
answer
593
views
Reject Exim authentication attempts based on username
Is it possible to set up Exim so that, based on the username passed along to it, it can reject an authentication attempt before it will try to do a password lookup for that username? I've done similar ...
- 21
1
vote
1
answer
200
views
How to setup SPF and DMARC for satellite hosts?
If I send mail directly from relay host - everything works like a charm. All checks are passed.
Delivered-To: [email protected]
Received: by 10.100.182.171 with SMTP id t40csp2626933pjb;
Thu, 26 ...
- 11
3
votes
1
answer
2k
views
Exim Configuration on Ubuntu 16.04, queue_per_connection
Trying to set up Exim on Ubuntu 16.04, and I'm getting it to send mail decently, however there are times I push batches of e-mails to the mail server (50+ at a time).
The default configuration seems ...
2
votes
1
answer
197
views
What are some reasons why using an SMTP relay would not be desirable?
It's my understanding that besides having another "link in the chain", there's no general reason to avoid using a reliable email relay service. (e.g.: ProofPoint, SendGrid, Mimecast, Postini-RIP etc.)...
- 135
1
vote
0
answers
107
views
Implement suppression list in Exim for some senders only
I have an Exim router that for some senders delivers mail via a smarthost:
send_via_ses:
driver = manualroute
domains = ! +local_domains
transport = ses_smtp
route_list = * email-smtp.eu-west-...
1
vote
3
answers
577
views
Why do Hotmail & Gmail mark all emails as spam for no clear reason?
Been testing for DKIM, SPF, DMRC and all of them are valid. Proven over several online tools.
mail-tester.com gave 8.8 points.
Server is not blacklisted anywhere, so far I checked.
But no matter ...
- 75
0
votes
1
answer
642
views
How can I delay the answer to a failed SMTP authentication in Exim?
I run a small-traffic Exim mail server. Occasionally I do get illegitimate login attempts for admin@DOMAIN etc., which are answered with an 535 Incorrect authentication data.
I would like to delay ...
- 126
0
votes
2
answers
1k
views
CenOS: Is clamAV scanning files of a compressed archive attachment inside emails?
Is clamAV scanning files insides compressed archive inside emails?
I was looking around to found an answer about this question.
Somebody wrote that on some ubuntu distribution this is the default ...
- 143
4
votes
2
answers
32k
views
How to get rid of "defer (-52): Retry time not yet reached" exim4 logs?
I have such a logs in mainlog of exim4. All I do with exim4 is learn only so all mails are fake. Now I try to manage theese logs that appear frequently:
2016-12-20 14:28:01 1cJ2UW-0006Yq-3m == root@...
- 173
0
votes
2
answers
1k
views
Exim4 root email forwarding failure
Before anyone asks, yes, I've read the other 50 threads about this, but none have worked. (And my reputation is low enough that I can't seem to comment on existing threads, hence having to restart ...
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