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Questions tagged [smarthost]

81 questions
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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 has multiple A records and MTAs available to accept…
Mike B
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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 test changes our sendmail tool uses smart host.…
fashuser
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Exchange won't log in to smart host

My Exchange 2010 server is configured to relay mail to a smart host. Basic authentication is required over TLS. For some reason, Exchange doesn't feel like logging in. I see the following error message in the Queue Viewer: 451 4.4.0 Primary…
Richard Hansen
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IIS 6 Smart Host Outbound Security

I'm using the IIS 6 smart host setting to forward all email sent through IIS to SendGrid. It works fine if I set the Outbound Security and smart host settings at the top level of the Default SMTP Virtual Server properties. But the downside with that…
thelsdj
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Exchange 2003 missing default SMTP connector, but still routing through smarthost

I have an Exchange 2003 server currently using MXLogic as a smarthost, relaying all outbound mail through it. I confirmed this by sending mail outside the domain and checking the headers. I need to modify the smarthost I'm using, but I can't find…
ndespres
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Configure Exim4 with Multiple Smarthosts

I'm using Exim4 version 4.76 and can't really find what I'm looking for - except if I don't understand how exim4 works exactly. I have configured exim4 as such that when we send an email from our web applications (which is on the same server as…
user114637
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Using exim4 as smarthost with multiple recipient servers

I've two mail server, one running exim4 as smarthost. atm it delivers all mails to the second server (with the mailboxes). Now I want the smarthost to send all message also to a new server for testing. I tried it with: route_list = domain…
kelvan
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SMTP smarthost round-robin balancing

Our SMTP provider requires to distribute emails evenly between four different hosts. I understand that the standard way to distribute this kind of load is utilizing DNS round robin feature, but the problem is that provider's mailservers should be…
Alex
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Exim: Use remote_smtp or smarthost for failover

I've got a server with exim4 and a smarthost in front of it, the use of the smarthost is mandatory, the university closed down port 25. However, on IPv6 this port is open. So when the receiving server has an IPv6 address I could send it directly. So…
blauwblaatje
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Handling bounced email when using a postfix smarthost

I'm running a high availability cluster, and so far, most things work great. I have two external machines that act as outgoing mail hosts (smarthosts). The internal hosts are configured to relay all email through these two external facing hosts. My…
Mark Rose
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Using Exim and Google Apps email as smarthost

I have a server setup to use exim4 and google apps as my smarthost. But I get errors when the to address is not the one I use to authenticate to google and it seems to drop all return addresses that are not the one it uses to authenitcate.…
pferrel
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Paid SMTP service to decrease probablity being detected as spam?

Is it worth using paid SMTP service to decrease probability being detected as spam? What paid smtp services (except smtp.com) you know? PS: Of course, I'm not going to send spam. PPS: Probably this question is not for sysadmins & developers, but I…
Kirzilla
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Trying to use a SmartHost with my Exchange 2010 server

I'm trying to use a SmartHost with my Exchange 2010 Server. SmartHost details: Secure SMTPS: securemail.internode.on.net 465 <-- Note: that's port 465 Configure your existing SMTP settings (in your email program) to: use authentication (enter your…
Pure.Krome
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Exim4 Smart Host Relay

I am running Exim 4.71. I want to: Route all email from A.com through mail.A.com Route all email from [B-E].com through mail.B.com Send all other email directly. Here is the configuration I have that doesn't work like I hoped: domainlist…
ColinM
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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. When a local web application sends an email to…
Sandro B.
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