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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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Why isn't the MX record propagating after pointing a domain to Yahoo Mail Server?

I have bought a domain https://kmtc.com.sa/. The domain provider is marcaria.com. It is currently pointed to a Hostinger for the web files. The Yahoo mail server is supposed to be working with Yahoo now, pointing an MX record to the yahoo mail…
Jed
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Email server: Remove rua from DMARC DNS entry or stop receiving DMARC reports

I have the following DNS entry for one of my clients email servers: _dmarc IN TXT "v=DMARC1; p=none; rua=mailto:postmaster@example.com" This is the only email server I'm administering, which has a DMARC DNS entry - in other cases SPF and DKIM was…
manifestor
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How to change the date format of maillog?

The format of the dates of my maillog logs looks like this: May 12 04:12:54 I need to include the year on this date. Is it possible to make this kind of change?
Diogo Braga
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`connect to private/policy-spf: No such file or directory` when receive mail by postfix in centos 7

My system is centos 7 with postfix,dovecot,pypolicyd-spf, opendkim. I can send mail but cannot receive mail, I notice warnings as below: Feb 6 20:01:09 srv-8327 postfix/smtpd[20391]: warning: connect to private/policy-spf: No such file or…
kittygirl
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How to modify Receive header in Postfix

Each Mail Transport Agent that encounters a message adds a Receive header to indicate where, when, and how the message arrived and also some data about the receiver. When I send an email from Mac Mail.app MUA, my Postix MTA adds: Received: from…
potato
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can I use multiple selectors for opendkim?

I have 4 domains hosted on a single server. Should I use 4 separate dkim keys or one for all of them? Also as far as selectors go do I need to use the one specified in opendkim.conf or can/should I create a new one per each domain with new key?
Marcin Kozyra
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NOT receiving DMARC reports from AOL / HOTMAIL / MSN / OUTLOOK / LIVE

My DMARC DNS record looks like this: (domain name is redacted) _dmarc.domain.com TXT "v=DMARC1; p=none; sp=none; rua=mailto:dmarc@domain.com; ruf=mailto:dmarc@domain.com; rf=afrf; pct=100; ri=86400" Now, I receive aggregate DMARC and forensic…
whallz
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Domain registered on aws, how to create my domain email

I have been looking online for a tutorial on how to set up an email address @mydomain for a domain I registered on aws. I have already set up an aws instance running my app, and an Amazon SES. Also, I have verified my domain so that I can send…
Nicola Pedretti
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SPF broken by forwarding on the recipient side : what do?

I run an SMTP server with SPF enabled, and I need to email users from a list of academic addresses. Thing is, these addresses are used to forward emails to the end user. And SPF breaks forwarding, as I figured out the hard way (554 5.7.9 errors…
Skippy le Grand Gourou
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Send mail without MTA, GMail, etc

Why doesn't it seem to be possible to send mails from the command line without any kind of SMTP server? All solutions that I found either use sendmail, postfix, etc. (those are SMTP servers as far as I understand it) or send it over GMail or some…
Shadowigor
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Use Let's Encrypt certificate for mail server

I currently have a free StartSSL certificate for my mail server (postfix/dovecot). Of course, it works fine but Let's Encrypt certificates are easier and faster to work with. My Apache server also uses a Let's Encrypt certificate. So, if I decide to…
ABu
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Using Mac OS X Server e-mail and calendering

I'd love some feedback from folks on using the e-mail server and calendering features of Mac OS X Leopard server. How well has the e-mail server worked for you? Can you get your e-mail on a variety of (Mac and Windows) clients? Do you have the…
Paul Lefebvre
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MXToolbox: "Reverse DNS is not a valid Hostname"

I know that there is another thread about this topic here on serverfault.com but it did not solve my issue. I have also googled it and it seems that SPF record could be mis-configured in some cases but it did not help me neither. Can someone tell…
Jens Kirk
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Generating SSL key for Dovecot and Postfix

Following this tutorial: https://www.vultr.com/docs/simple-mailserver-postfix-dovecot-sieve-debian Trying to create a self-signed SSL certificate for testing purposes for my mail server, using code: openssl req -newkey rsa:4096 -sha512 -x509 -days…
0leg
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Sendmail: "TLS verify=FAIL", "554 5.1.8 : Sender address rejected: MX record not found"

Have been struggling for a day already and can't find solution. When try to send mails to some hosts: Jan 5 10:31:37 vps**** sm-mta[2192]: STARTTLS=client, relay=mail-x.*****.co.uk., version=TLSv1/SSLv3, verify=FAIL, cipher=DHE-RSA-AES256-SHA,…
Amundio
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