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.

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1answer
13 views

Lotus Notes subdomain exchange server

We have a notes server at notesserv01.intra.contoso.com that processes our regular email, and an exchange server at exchserv01.intra.contoso.com for testing purposes. Lotus Notes email addresses are ...
1
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0answers
37 views

Postfix on server with multiple IP addresses sends mails with wrong HELO in header

I have a VPS with multiple IP addresses: venet0:0 x.x.x.2 venet0:1 x.x.x.3 venet0:2 x.x.x.4 venet0:3 x.x.x.5 All IPs have A records m2.domain.com -> x.x.x.2 m3.domain.com -> x.x.x.3 ...
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votes
1answer
25 views

A proper email server setup tutorial [on hold]

I know that there are plenty of tutorials floating around online on how to properly setup a mail server on Linux. The only problem is that most are severely outdated and the information isn't clear. ...
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2answers
31 views

Postfix Failed to Receive Email

I am trying to set up a mailing server with postfix and dovecot in ubuntu 12.04 following this guide. All seems to have worked out correctly and when I try this echo test | mail email1@example.org ...
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0answers
12 views

Disable mailboxes on Exchange 2007 while emails are being redirected to Gmail

I am trying to uninstall Exchange 2007 for a client as they have decided to use Gmail from now on. I have been going through some errors like the transport connector and the watermark and now I am ...
2
votes
2answers
27 views

How to move cur tmp new directories directly in virtual user home?

Reading the Maildir documentation they just mention folder should be like user/Maildir/cur tmp new So my virtual users have it without Maildir folder like: ...
1
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1answer
47 views

Can existing email accounts be extracted from Zimbra?

I have become dependent on Zimbra, and yet I have no need for a heavy GUI administrative interface. I'd rather keep a low-resource server that runs only the underlying services Zimbra uses, such as ...
-3
votes
0answers
31 views

What is the definition of an SPF SoftFail? [duplicate]

1) In a "How To" I see: "~ tilde signifies a SoftFail should be issued". I don't get it. a) Who should issue the "SoftFail"? b) Who should receive the thing issued? c) What exactly is being ...
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0answers
4 views

Should SpamAssassin tests/rules differ between implementations? [migrated]

Disclaimer — I have no experience installing or maintaining servers of any sort. I'm asking here as my webhost isn't giving straight answers and am hoping to find some clarity. I'm having an issue ...
1
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1answer
23 views

Forward Exchange 2013 email to a different mailbox server

Alright, I've seen a few of these posted, but nothing that really jumps out and seems like its' going to do what we need. We have been using a cloud hosted exchange 2013 system for about 8 months ...
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votes
1answer
34 views

Could nginx mail module replace a Postfix/Dovecot combo

I saw that nginx has a "Mail Module". I googled but don't find much documentation about this. What is this ? For what can it be used ? Could it replace my current simple Postfix/Dovecot combo?
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votes
1answer
43 views

how to prevent fake mails from being sent on my mail server? [closed]

I use Zimbra as my office email server. Recently, an intern at my company showed that he could use my email id (without hacking into my account) to send emails to anyone in the company using the ...
-1
votes
0answers
24 views

Cannot send mail from Zimbra mail Server from external program [closed]

I have written a Java program to send mail through a mail server. It is sending mail successfully through the gmail server. But as I am trying to send mail from our Zimbra mail Server I am getting an ...
0
votes
1answer
28 views

Postfix milter-reject: END-OF-MESSAGE from 4.7.1 Service unavailable - try again later

I am running postfix-2.11 version and recently i have added dkim-milter-2.8 Postfix configuration: # DKIM milter_default_action = accept smtpd_milters = inet:localhost:8892 non_smtpd_milters = ...
-1
votes
0answers
11 views

Axigen + sa-learn

I have Axigen email server (free version) running just fine on ubuntu server. I also installed spamassassin external package and it is working just fine. Now I want to use sa-learn to train SA , but ...
0
votes
1answer
60 views

Relay Denied SMTP error from remote mail server after RCPT TO: <email@example.com>

Hi I have a problem when I want to send mail using smarthost method in exim and usage Mailgun as SMTP server for relay. this is my configuration dc_eximconfig_configtype='smarthost' ...
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votes
1answer
31 views

Understanding Postfix Mail Log (Part II)

There are several logs like below in my Postfix mail log: Mar 9 06:01:10 postfix/smtpd[23043]: initializing the server-side TLS engine Mar 9 06:01:10 postfix/smtpd[23043]: connect from ...
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1answer
33 views

Relay denied (454) [closed]

I make test with the website mxtoolbox.com with my smtp and received this error: 220 hostname.example.com ESMTP [702 ms] EHLO MXTB-PWS3.mxtoolbox.com 250-mail.example.com 250-PIPELINING 250-SIZE ...
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votes
2answers
53 views

Internal SMTP server no longer delivering to Google Mail

Our corporate email is hosted on Google Apps, along with 5 domains for various products. Internally (Behind our firewall, not exposed to the internet) we have an IIS server running Microsoft ESMTP ...
2
votes
1answer
26 views

Catch incoming email and then deliver to original recipient on sendmail

in the company I work for there are a user that is making bad use of the email, but to have evidence of what he is doing we need to intercept all the incoming email to him and all outgoing email from ...
0
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0answers
16 views

Exim 4.72 doesn't verify recipient

I have a problem with recipient verification. I have next configuration for acl_check_rcpt: accept hosts = : deny message = "Invalid characters in the address" domains = ...
3
votes
0answers
25 views

Dovecot and virtual domains with different namespaces

I've got dovecot 2.1.7 setup with virtual domains and now would like to have different public namespaces for each of the virtual domains. E.g. workdomain.com -> INBOX (private namespace) -> ...
0
votes
0answers
20 views

Is “Received: from hostname (localhost [127.0.0.1])” triggering spam filters? [duplicate]

I am running my own postfix Mail Server. All my mails are Spam filtered (at least by Gmail and Yahoo). I don't really know why they are filtered, because I have implemented SPF, DKIM and DMARC. ...
2
votes
1answer
36 views

SMTP DNS Validation with multiple mail servers behind multiple Public IPs

I know when a Mail server receives an e-mail, it performs a "DNS 3 way check" (I think this is also sometimes called FCrDNS) as a simply test against spammers. The way I understand it to work is as ...
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0answers
12 views

Courier accept mail from sender

I have this situation with courier mail server, that client sends mail from server, which is in black list. How I can accept mail only from that sender and keep blocking spam from that server??
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votes
0answers
17 views

SMTP server for same domain as Google Apps for Business

My company currently uses Google Apps for Business. For our application I need to create an SMTP server that can send out emails. I can't use gmails smtp because it limits the number of emails per ...
1
vote
1answer
29 views

helo message set to local hostname

I have a droplet on DigitalOcean and decided to implement my own mail server there using postfix and dovecot. Everything worked correctly and I was able to send and receive emails via a mail client ...
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0answers
48 views

Hotmail SMTP cache?

So this is an odd one ... Does Hotmail in anyway resolve and cache information for MX records or A records for individual email addresses? For Example: I setup a personal test bed mail server and ...
0
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0answers
16 views

outlook doing remote portscanning

A while ago I switched my mailbox on another domain and configured outlook with an exchange server on that domain. Recently for some strange reason my hosting provider has been complaining that ...
0
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0answers
7 views

Starting qmail-toaster: svscansvscan: warning: unable to read directory: access denied

I got such message when trying to start qmail-toaster: Starting qmail-toaster: svscansvscan: warning: unable to read directory: access denied All permissions are correct. drwxr-sr-x. 2 alias ...
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votes
2answers
37 views

Emails from my domain getting blocked at all other domains [duplicate]

Recently I tried to set up a new email server using iRedMail on Lubuntu. The mail server workes very well when email conversation is in the same domain. But when a user tries to send email to some ...
4
votes
2answers
82 views

Parse undelivered mail headers (bounced mail)

What is the best way to parse the headers of bounced (undeliverable) email that is sent back to my server and determine whether it is a soft or hard bounce? I only send opt-in emails to my users, but ...
0
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2answers
120 views

email sending speed - how to improve

I am maintaining a server to send email mailings (no spam, of course). The current speed of this machine is approx. 2000 emails per hour. (edit: actually I did a test mailing today, removing the ...
4
votes
1answer
113 views

how do I set up two smtp ports for postfix?

A CentOS 7 server with postfix, dovecot, and mailx needs to accommodate mail being sent through port 465 and received through port 25. What specific syntax and files need to be changed in order to ...
0
votes
1answer
41 views

How does the DKIM from SendGrid prevent me from spoofing my email adress?

I'm making use of SendGrid to send automatic emails. First I went to the whole hassle of creating a DKIM record, before I recently discovered the whole record doesn't seem to be checked anyway, ...
1
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1answer
65 views

Understanding Postfix Mail Log

Recently I checked my mail log and found a lot of messages like this (some cipher text have been truncated): Feb 23 11:57:42 postfix/smtpd[32451]: initializing the server-side TLS engine Feb 23 ...
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0answers
21 views

Unable to sync Outlook 2010 with Exchange? Mailboxes too large? [migrated]

We retain a single document ingestion inbox for incoming files from our clients, the size of which is ~30 GB. Several users are monitoring it via a shared folder in Outlook 2010. After reformatting ...
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votes
0answers
12 views

Spam in server using EM Client

In em client, I added a rule that will delete the spam permanently. Now, my question is, will it still be listed in our server or the spam message will not be included in the list?
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0answers
26 views

Remove emails from server - Zimbra

I have a Zimbra 6 emailing server. The space on the server is almost full. I deleted all the emails from my account, but unfortunately, the mailing server didn't release any bit. From what I ...
1
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0answers
27 views

Applying filter on mail from specific subnet in postfix [duplicate]

I'm trying to get the following to work: We have a postfix relay on the edge of our network, accepting all mail from our internal LAN & DMZ. What we are trying to get to work is limiting the ...
0
votes
1answer
29 views

What should be the reverse DNS for the email server?

When I nslookup x.x.x.x my web server's IP address I get this error: Non-existent domain. Must it return the top domain like mydomain.com or it is okay to return ...
0
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0answers
12 views

Blacklist mail server [duplicate]

I have checked my IP in all spam lookup sites. those sites are DNSBL.info, spamhaus.org, barracudacentral.org, spamcop.net, blacklistalert.org and all of it says that I am clear. But when I checked it ...
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votes
4answers
186 views

Remove blacklist from spamRATS

I have checked my IP in SpamRATS and the result is the following: Standards Compliance: Does IP Address resolve to a reverse hostname... Passed! Does IP Address comply with reverse hostname ...
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0answers
8 views

Google Apps for business ALL bcc

I did not get an answer from Google Apps team. Hence asking here. Like in Postfix we have an All BCC email option where every email sent and received of a domain will be BCCd to an email id, can we ...
1
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1answer
34 views

Two servers in domain but only one responsible for sending emails

I have two Debian servers: web.example.com - LAMP web server mail.example.com - mail server with postfix, dovecot and mysql based user directories, auth required Now I want to setup web.example.com ...
0
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0answers
25 views

My server mailing use server email adress instead of my domaine email adress

Well I hope i will be enough clear so i have a mailing system on my server that I use for sending newsletters Last time i worked on my domain email authentification (SPIF - DKIM - SpamAssasin - ...
2
votes
2answers
57 views

PHP emails, Postfix and Message Queue

I've been running a web platform that needs to send a considerable amount of emails daily. At the implementation date I and my partner decided to setup Postfix on the server and use Swift Mailer class ...
0
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1answer
25 views

What happens to local email when user does not exist

I'm running a server with postfix to handle email sent from a php website. Email for the domain is handled by another server, however due to the fact that this domain name has been entered in ...
0
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2answers
64 views

mx server: multiple domains on one ip

I'm just a bit confused about the correct DNS setup for hosting multiple domains on a single server with one ip. For example the mail server (domain/reverse: example.com) should host 3 domains: ...
1
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1answer
52 views

Is Dovecot required for mail server like Exim or Postfix?

I am really confused about this, because I thought Exim and Postfix can authenticate user logins and nothing is required. Reading the page at ...