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Questions tagged [email-server]

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

Refers to the hardware or software that make up a server dedicated to sending and receiving emails. Many popular modern email servers bundle other functionality for contacts and calendaring along email delivery.

A list of mail servers can be found on Wikipedia, though sendmail, Microsoft Exchange Server, Postfix, and Exim are the most popular email servers, which together control over 85% of market share for SMTP service.

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Receiving DMARC reports for emails I do not send

I am hosting the email for my domain (lets call it example.com) on google apps (free legacy edition). I recently enabled the DMARC reports so I now get a daily report for the emails sent from my domain. My problem is that sometimes I get reports…
DorAga
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/etc/aliases vs virtusertable

I have a mail server running Sendmail that hosts multiple mail domains. So for instance, emails addressed to @aaa.com and @bbb.com are both going to this same server. All this time I am using /etc/mail/virtusertable to manage the mappings of…
sylye
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How can I use Postfix to track/log the HELO name that IPs are communicating to it with

I am using Postfix as an internal mail relay server, and we have several servers internally running all sorts of custom code, some are packages/services, and some of it is native Linux or Windows system services that use this/these systems to…
Keegan Jacobson
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Reverse DNS is not a valid Hostname error from MXToolBox

I can't send email messages from my server. However, I can receive email messages. I set up my server the exact same way I did many times which I've proven it works and it's pretty straightforward and consist of: Create a DigitalOcean Droplet…
Jason Lint
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Why is sendmail adding an extra carriage return in headers?

I've got SendMail 8.14.4 running on a CentOS 5 server. A user in Japan is sending a message and when it gets processed by the server, SendMail is adding an extra carriage return for some reason. The email contains a X-header with values that…
Mike B
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Is there a graceful way to pick up new changes in sendmail?

Is there a graceful way to have Sendmail reload/process configuration changes from sendmail.mc without completely restarting services and potentially impacting smtp delivery that's in progress at that moment? I guess I'm looking for the sendmail…
Mike B
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How to enable RBL checking in postfix?

How to enable RBL filters in postfix? My current configuration: submission inet n - n - - smtpd -o syslog_name=postfix/submission -o smtpd_tls_security_level=encrypt -o smtpd_sasl_auth_enable=yes -o…
Sfisioza
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SSL_accept error when mail client connect to postfix

I've managed to set up postfix and dovecot with self-signed certificate on my server. I can send and receive email using telnet command there. Now I want to connect to my mail server from a Thunderbird client on my laptop but it fails and here's the…
src091
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How configure roundcube to work with imaps?

I recently installed Postfix, Dovecot to setup a mail server on my own VPS ( using this tutorial: Email with Postfix, Dovecot, Mysql) Imaps server uses port 993 for Authentication, and Postfix uses port 25 to send mails. In this tutorial, users…
Amin Salami
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How do I add outbound only mail service for local tools to a 'minimal' debian system?

I have several servers running applications on debian. Each has the packages it requires for the application, and no more. Currently, none have mail sending capability. However, I would like the output of tools like cron to be mailed to me. The…
John McAleely
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How to Remove UNCHECKED Term Attached in Email Subject Area When Received

How do I turn off "UNCHECKED contents in mail FROM" mails sent by Amavis to the postmaster of the domain every time a user sends an encrypted mail. The setup is a Debian 7 with postfix and amavisd.
nazco
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Do you run antivirus in mail server?

Considering a normal e-mail volume (I don't know how can I define that) of 10000 users in a mail server does it make sense to scan emails for viruses? I guess it should affect the server load but in what extend? Desired answer should include…
pl1nk
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Expose IIS SMTP Pickup folder as a file share - bad idea?

Environment: IIS Web Farm 5 servers Windows Server 2008 R2 IIS 7.5 ASP.NET 3.5 and 4.0 web application Our web app, like many, needs to send mail. Send only, no receiving. In the past, we've enabled the IIS 6 SMTP service on each web server and…
Larry Silverman
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What exactly should HELO say?

I have MX records setup at mail.domain.com and my domain is visible through domain.com I am sending email via PHP PEAR Mail package. This page claims I can change: The value to give when sending EHLO or HELO. Default is localhost As of right now,…
darkAsPitch
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My Postfix has gone wild, is it compromised

Today, I found my server couldn't work because it was filled. I checked the logs and they had grown enormously, I deleted them so as things could work. now with current logs I'm seeing a lot of suspicious activity. Mail log : Aug 18 23:09:29 veepiz…
Sir Lojik
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