Server Fault Stack Exchange
Server Fault Stack Exchange

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.

3029 questions
5
votes
2 answers

Are there any SMTP servers that support the SMTPUTF8 extension?

RFC 5321 limits email addresses to 7 bit US-ASCII encoding. RFC 6531 (a fairly new spec) allows email addresses in SMTP commands and IMF headers to be encoded in UTF-8. This SMTP extension makes internationalized email addresses (e.g.,…
james.garriss
  • 360
  • 6
  • 17
5
votes
1 answer

Postfix - how to block emails sending out to a particular domain

I am having Postfix installed mailserver and I am using that server for legitimate purpose only. I need to block some outgoing emails for a particular blacklisted domain. Is there anyway to do through the configurations ? Your help is greatly…
karthick
  • 683
  • 3
  • 7
  • 14
5
votes
1 answer

Is null return path reliable indication of a bounce?

I have a mailbox that receives bounces as well as normal email (the latter includes messages from automated services). I want to filter out the bounces and forward them to another mailbox. Assume I cannot change the envelope return path in email I…
Vasiliy Faronov
  • 215
  • 2
  • 5
5
votes
1 answer

Freebsd jail for an small company - checklist - what shouldn't forget

Looking for an checklist for an "small company freebsd/jail server". Having pretty common starting point: FreeBSD jail (remote/headless) for the company: public web, email, ftp server, and private (maybe in the future partially public) wiki…
cajwine
  • 183
  • 1
  • 5
5
votes
4 answers

Copying/syncing email from a live server over network

The scenario is as follows: Copying and then syncing from a live mail server via network(only) to another server. The mail server is live meaning that lots of files (mails) are being altered, deleted and created. I have tried rsync but it's…
pl1nk
  • 461
  • 5
  • 22
5
votes
1 answer

Domain of sender address does not resolve (in reply to MAIL FROM command)

When sending out emails with postfix I sometimes get this error: 451 #4.1.8 Domain of sender address does not resolve (in reply to MAIL FROM command) The domain mydomain.tld is resolvable though, meaning A, MX, PTR records are…
horen
  • 411
  • 2
  • 7
  • 22
5
votes
1 answer

Exim4: all relevant MX records point to non-existent hosts

I'm currently having an issue with exim4. Some mail isn't delivered. I found this in my rejected log. 2012-06-21 10:11:47 H=bart (bart.*.com) [192.168.171.145] F= rejected RCPT : all relevant MX records point to…
user125483
5
votes
1 answer

Configure Exim to forward email

I have an Ubuntu 10.04 VPS set up to manage sub.example.com and I've configured Exim to send email using this tutorial from the Linode Library. That's working, but in addition to sending email I realized I need a single non-root email address…
IceCreamYou
  • 153
  • 1
  • 1
  • 5
5
votes
3 answers

How to get Postfix statistics of second instance?

I have a quick question. I have two instances of Postfix running on an Ubuntu server and I want to write some scripts to email our server admin Postfix statistics (queue count, sent, etc). How would I get that information on the second…
thiesdiggity
  • 437
  • 1
  • 9
  • 22
5
votes
5 answers

How do I move my website to a new server without interruption to email?

I have a corporate website on a server that also hosts all our email. I have no idea how diligent all the employees have been about backing up their email / leaving old messages on the server, etc. In fact, I'd like to avoid all that hassle and keep…
Tom Auger
  • 341
  • 2
  • 5
  • 14
5
votes
3 answers

Why does gmail flag my server emails as spam?

I recently moved my server to a new slice at slicehost and since, gmail has been flagging my email as spam. I have added domain keys, created a SPF record, have reverse dns setup, and my ip is not blacklisted. This is a header from a server…
TenJack
  • 193
  • 2
  • 7
5
votes
1 answer

Rejecting unlisted senders in Postfix

A question from a beginner Postfix admin. What is the exact difference between writing in main.cf: smtpd_reject_unlisted_sender = yes and smtpd_sender_restrictions = reject_unlisted_sender ? Is there a real difference in operation or is…
malloc4k
  • 831
  • 2
  • 9
  • 16
5
votes
5 answers

What are the options for sending legitimate bulk email?

I've got a new client that wants to send batches of around 1000 emails weekly to their client list (all opt-in recipients). Previously when I've built something for a client it has been their own mail server. Can anyone recommend any alternatives…
Gareth
  • 8,573
  • 13
  • 44
  • 44
5
votes
2 answers

Postfix & client IP reverse DNS

I explicitly added reject_unknown_client_hostname and several other reject rules to slow down SPAM in our server. So far that's working nicely. However, there is an important client that keeps getting rejected by our mail server, either because…
Mike Darrow
  • 53
  • 3
5
votes
1 answer

Allowing a domain to send emails via another domain

I have two servers: www.website1.com www.website2.com I have another server www.website3.com which I want to be allowed to send emails in behalf of the first two websites. How do I do this?
Dave
  • 225
  • 3
  • 8
1 2 3
…
99 100