Questions tagged [smarthost]
The smarthost tag has no usage guidance.
81
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21
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Internet relay postfix with virtual alias and .forward
In a relay postfix for a domain, I am trying to configure so that each user indicates the e-mail destination address he wants in the .forward but as virtual_alias_maps is configured, it always takes ...
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0
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29
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Exim and Logwatch Missing Return-Path
I have been trying to troubleshoot a weird issue I am having with logwatch and exim. I have logwatch setup so send via another exim smarthost.
If I send a test message via GNU mail. It gets through ...
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0
votes
1
answer
852
views
exim4 authentication with external smtp server for smarthost
/etc/exim4/update-exim4.conf.conf
dc_eximconfig_configtype='smarthost' # was local
dc_other_hostnames='' # was mini31
dc_local_interfaces='127.0.0.1 ; ::1'
dc_readhost='mini31'
dc_relay_domains=''
...
0
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2
answers
79
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Use smarthost only if VPN is up (Debian, Postfix)
My work laptop is used in a “road warrior” setup. This means it’s often used in whatever WLAN and other networks I find, but I have a VPN connection to the office I can use.
The company’s mailserver ...
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429
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Exim Smarthost setup works in starttls but not in smtps
I have setup my exim4 as a local mta with smarthost delivery (debian 10 vm) following this guide: Exim on DebianWiki
If my smarthost is expecting a ssl connection (smtp over ssl) it does not work.
...
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-2
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1
answer
42
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Separate eMail relay: DNS requirements beyond PTR record?
Some cloud business offers "always-free" VM instances. Not quite big, but enough for me, so I’m going to migrate my infrastructure there, including mail.example.com. That machine handles ...
- 90
0
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1
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494
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Sendmail not relaying to 127.0.0.1:25 instead of smart host
I am trying to use a SMART_HOST on RHEL7 with sendmail. I have configured sendmail.mc as follows:
define(`SMART_HOST', `my.relay.com')dnl
After compiling I have this line in sendmail.cf:
# "...
2
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0
answers
184
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TLS Problems when changing providers relay host
Good Evening,
first time posting.
This forum and it has helped me many many times.
I was looking to for some advice / views on a problem I’m having.
The server is relatively old, Debian 6 to be exact ...
- 21
0
votes
1
answer
254
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Mail queue timing out with sendmail to port 465
I have a working sendmail installation that now needs to send to a different smarthost, on port 465 (instead of 25). I made the following changes to my sendmail.mc
define(`SMART_HOST',`mta.mydomain....
- 1,674
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1
answer
1k
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Exim:Use specific smarthost for certain recipient domain only
I'm looking for solution for the case described below.
I've to send mail to some domains (hotmail, outlook) via smarthost, because of blocking my server's IP (Hetzner) on side of Microsoft.
Key ...
- 70
1
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0
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56
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How to redirect only matching mailboxes to a smart host
I have o365/Exchange configured as an internal relay, so it sends incoming mail for which there is no mailbox onwards to a smart host. The smart host only handles email for addresses prefixed with "...
user83664
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44
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Why are out of office mails accepted by receiver when they bypass postfix smart host?
With internal recipients everything works great. Exchange 2010 Out of office mails are sent and received. For external recipients, out of office mails are sent OK but they are not accepted by the ...
- 23
2
votes
1
answer
894
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Forged FROM: header despite reject_authenticated_sender_login_mismatch
structural description
Server A runs postfix and acts as smarthost for server B (also running postfix), reject_authenticated_sender_login_mismatch is set and works (almost) as expected, see below
...
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1
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0
answers
85
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Does Exchange 2013 cache smarthosts?
I am getting desperate and start to question my own sanity so maybe one of your can give an explanation for some seemingly strange Exchange 2013 behaviour.
I'm trying to change the url of a smarthost ...
- 11
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3
answers
5k
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Exim Smarthost Multiple domains and credentials Mailgun
I have a GCP instance running with whm/cpanel and mailgun setup using exim for multiple accounts using multiple domains.
The current setup works for all domains however it only validates for the ...
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1
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232
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How to get LAN server to send out via smarthost?
I've got a server on my LAN runnnig exim4 configured to use a smarthost on the WAN like this:
disable_ipv6='true'
dc_eximconfig_configtype='smarthost'
dc_other_hostnames='hostname.mydomain.com'
...
- 472
0
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1
answer
1k
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IIS 6.0 SMTP Virtual Server do not AUTH on Smart Host
We're using IIS 6.0 SMTP Virtual Server to receive and forward e-mails from our website hosted on the same dedicated machine. Everything worked fine, up until we recently transfered the e-mail service ...
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-1
votes
1
answer
520
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Exchange Server 2016 Standard: Connect mailbox to external mailbox [closed]
I'm searching for a method to connect exchange mailboxes with external mailboxes. I checked the EAC (found Send and Receive Connectors but they don't seem to be the right answer) and on web (found 3rd ...
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1
answer
2k
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Postfix as a smart host? Is this possible
We have 3 SMTP servers on 3 separate public static ip's. We have a secondary failover connection on a single static ip. I would like to put all 3 SMTP servers behind the router and off the public ip's,...
1
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1
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348
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postfix smarthost outboud mail server
Greetings good people,
I'm really exhausted trying to understand a certain postfix setup by going through its config files. I know this question sounds a little strange to you all as im trying to ...
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2
answers
310
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Exim4: Local delivery after spamcheck of an outgoing email
domain.com and domain.net are hosted on one and the same server server1. To avoid SPAM and viruses all outgoing emails (even to local domains) are subjects to scan with a 3rd party service. Thus ...
- 75
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1
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2k
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Is there any way to relay e-mail without authenticating?
Deployed simple Postfix setup.
Currently using Google's SMTP server as smarthost:
relayhost = [smtp.gmail.com]:587
smtp_sasl_auth_enable=yes
smtp_sasl_security_options=noanonymous
smtp_use_tls=yes
...
- 117
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1
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485
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Exchange route mail to internal smart host
We have a BI/ETL tool which is capable of triggering tasks on receipt of an email. We have a number of servers set up running this tool. Each is configured as an IIS 'smart host'.
We currently use a ...
8
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1
answer
27k
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Fixing starttls verify=fail, verifymsg=unable to get local issuer certificate
Running Amazon Linux on EC2 instance with sendmail. I have an email account with Network Solutions, and use that account as a SMART_HOST relay in my sendmail configuration. It works well except for ...
- 405
1
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1
answer
353
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Configuring postfix to use smarthost
I have an application running on centOS 7, which needs to be configured to send mail(postfix) to a third party SMTP server. I have found that a way to accomplish this is to configure a smarthost using ...
2
votes
1
answer
105
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Turning off EOP connector during maintenance
I have a virtual mail server in house protected by Exchange Online Protection, and it has been running well for the last few months. Over the weekend, the hosts that host the VM will be taken down, as ...
- 754
1
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2
answers
4k
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Exim client not issuing STARTTLS when connecting to smarthost
I have a Debian8 server running exim4 that sends outgoing mail by smarthost through NameCheap's mail.privateemail.com smtp server - or at least it use to. After a recent update, the server no longer ...
- 101
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0
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516
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Force sendmail to check recipient domain exists
There is sendmail relay host for LAN/external users using AUTH or trusting local users, but there is a problem that sendmail accepts mail from trusted users addressed for non existing domains (non ...
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1
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2k
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How to choose a smarthost based on From: address in exim4 on Debian
I want to route emails with the From: .*@host1.com through smtp.server1.com and emails with the From: .*@host2.com through smtp.server2.com.
For the moment, I have smarthost configured with dpkg-...
- 201
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1
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863
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exim: different password for remote smtp relay smarthost
Currently I have my exim configuration set to send all e-mails using an external SMTP server. All users authenticate with my exim server with a local password and then the messages sent is relayed ...
- 210
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48
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Smarthost percentage of mail on Exim4
I'm transitioning mailing of a sizeable number of mails (maybe 1m/day) to another host. I want to warm up the new host gradually over a month rather than suddenly start sending through it and appear ...
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1
answer
2k
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Conditional use of relay(smarthost) for recipient domains matched by header_checks in postfix
On a postfix mailserver, which is configured to generally send mail directly (internet-site), I want to implement a conditional header check for some receipient domains (in this example to keep it ...
- 1,382
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1
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1k
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Exim4 working fine at sending emails, except to addresses with the fully-qualified domain in them
Exim is always touch-and-go for me to configure, since I only touch it once every 4 or 5 years when I have to make email work on a new server. As a result, I'm now having a problem where all the ...
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1
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625
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How to check if Exim has copies of outgoing mail
We're using a pretty simple Exim configuration which basically forwards all incoming mail via a Smarthost to a handful of final recipients. Normally this works fine - we don't read any mail on the ...
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1
answer
688
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Postfix - relay locally generated mail but accept mail incoming from GApps for the same domain
I know the way to disable all local delivery is to remove the domain from "mydestination", which will cause all mail to be relayed through whatever relay I setup. But I want postfix to accept all mail ...
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2
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1
answer
2k
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Postfix smarthost, allow relay by dynamic IP
I have several servers (web, mysql, java) that have postfix installed which are set up to relay to a smarthost postfix server.
DYNAMIC IP STATIC IP INTERNET
[...
- 796
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1
answer
3k
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Postfix: As a smarthost, how can I limit incoming mail to sender domain and sender IP?
I'm running a Postfix+Dovecot service on Centos 7 with a few unrelated virtual domains. This same Postfix server is also set as a smarthost (relay) for IP 192.0.2.2 and 203.0.113.2. Right now, ...
- 363
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1
answer
285
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smart host does not deliver email if date header sent?
I use MantisBT 1.2.6 on an Amazon Linux server. It has its own email-sending class layered on top of the PHP mail() function. Actually, it has other options to use smtp or sendmail directly, but I use ...
- 405
4
votes
1
answer
2k
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Postfix SASL with Dovecot and Authenticated Smarthost
I have a bit of a problem;
I have configured postfix to use dovecot for SMTP AUTH, therefore I had to specify dovecot authentication in the main.cf file. The problem is, I need to also authenticate to ...
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1
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2k
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Exim4: Deny outgoing emails with specific destination domains to being sent to the smarthost
I try to deny outgoing emails with specific destination domains to being sent to the smarthost but unsuccessfully.
I'm on a debian "squeeze" configured to use a smarthost.
vi /etc/exim4/conf....
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632
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On debian, how to set up a MTA like exim that allows per user smarthost configuration?
I have a problem setting up something that I think would be cool.
I have a server (Debian Wheezy) and I would like to let my users send email from their smarthosts. From what I have read, exim allow ...
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1
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169
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Does sendmail send everything to downstream smarthost in "single file"?
CentOS 5.x / SendMail 8.14.x
I have a SendMail server that delivers all outbound mail to a downstream smarthost in the cloud:
define(`SMART_HOST',`relay:[example.blah.com]')dnl
example.blah.com ...
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1
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6k
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exim4 - Why is rate limiting outbound mail to a smarthost only working with acl_not_smtp?
In an effort to rate limit outgoing emails per recipient (all emails are sent by the same user), I've been doing some testing in a very simple environment:
...
- 1,572
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0
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122
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Sendmail smarthost making my big mails sent AND stuck
In order to send my mails from my local Sendmail server to external address, I make it connecting to an authentified SMART HOST provided by my ISP.
The sendmail.cf has the following DS line :
DS[...
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2
votes
1
answer
3k
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Plain-text login with sendmail and SASL, Ubuntu 10.04
I'm trying to configure sendmail with a smarthost. I mostly followed this guide (although I understand it is written for Scalix).
SMTP server uses plain-text authentication. However, when sendmail ...
- 265
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1
answer
11k
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Set up Exim to authenticate users and then relay SMTP mail via smarthost using different auth
I am attempting to use Exim to function as an SMTP server which relays mail as a smarthost to our Mandrill service. (The point of this would be using Exim to authenticate our users for IMAP mail and ...
1
vote
1
answer
692
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SMTP as SmartHost for SendMail
My general task is following:
We have workable application that sends mails to the users (that are registered in this application on some actions);
Mails are sending using sendmail tool;
In order to ...
- 123
2
votes
2
answers
13k
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Sendmail: Mails are still being relayed to root@localhost
I am running CENTOS 6.2 with 2 virtual machines one 'auth'(192.168.0.2) and another proxy (192.168.0.3). Proxy host has no internet connection.
My intention is proxy host will send its mail to auth ...
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1
answer
446
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Postfix, MSA, Smarthost, and LAN
I've, let's say, 5 servers. They are either public and private or only private (network), they all send e-mails, either system e-mails (local mailbox) or installed application (wiki, issues tracker, ...
- 133
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1
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1k
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SPF + ISP Smarthost, always untrusted?
One of the ways mail-servers protect themselves from spam is by SPF-records, a DNS look-up saying what ip-adresses are allowed to send mail from a given domain name.
Another way the mail-servers use ...
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