0
votes
2answers
69 views

Reverse DNS (PTR) for Email

We are hosting our website (http://www.redappleapartments.com) with a hosting company in Sweden. And we are using godaddy as our email provider. So, our smtp servers are smtp.europe.secureserver.net ...
0
votes
1answer
159 views

DNS Zone Record: How to set up MX Record correctly? [closed]

I've been search for this for quite a while, and tried many different examples for weeks (because I usually have to wait a couple hours for the DNS change). Nothing made my mail() in PHP as well as my ...
1
vote
2answers
171 views

Setting up SPF records on dedicated server

I have a question in regards to SPF records in a dedicated hosting environment. I wish to set up an SPF record for my dedicated server, but I am not sure whether my understanding is correct. First ...
0
votes
1answer
347 views

Postfix/smtpd: Client host rejected: cannot find your hostname

I'm trying to set-up a mail server, using postfix and dovecot. Everything works fine, and I can connect in IMAP using Mozilla Thunderbird. But when I'm trying to send emails using the smtp server, I ...
0
votes
1answer
103 views

Using alternate server for specific subdomain - DNS settings

I'm trying to set up DNS records for a domain name, such that mail.domain.com uses a server that is different from any other request to *.domain.com. As I've been going about trying to figure out how ...
2
votes
1answer
53 views

SMTP routing cases: same @domain as sender and different @domain

I would like to know what is the difference between sending an email to the same @domain as the sender and sending to a different domain. I cant really find a detailed explanation on the web. From ...
0
votes
0answers
97 views

SMTP fails with Status: 5.3.5 when sending to a local mail server

In our network, we have na IBM Lotus Notes server, which handles emails for basedomain.com. Recently we introduced a new IIS Smtp server just for sending automated emails. The Smtp is configured for ...
0
votes
1answer
124 views

Azure - Set up a VM, hosting a website from it, now need to set up email for my custom domain

Here's the scenario: I set up a VM on Azure - we'll call it mikemarks.cloudapp.net. I installed IIS and got my website working by hitting the mikemarks.cloudapp.net URL. I have a custom domain ...
1
vote
3answers
198 views

Are generic reverse DNS entries acceptable for an outgoing SMTP server?

Our PTR records are managed by our ISP, as our ranges are too small for them to consider delegating to us. So, every time I want to update an entry, I have to email their support team. In an effort ...
0
votes
2answers
448 views

Outgoing mail through isp's smtp server is not getting delivered

What's the problem with the following emails? 1- Diagnostic information for administrators: Generating server: mailrelay002.isp.belgacom.be secretariat@lagereschoolbissegem.be [195.47.247.194] ...
0
votes
2answers
157 views

SMTP / HELO and RBL black listing

We've been having many issues with our external IP address being put on RBL's and blacklisted. We are using a 3rd party, hosted SMTP e-mail and we have two locations using it. Our TLD is ABC.com. ...
0
votes
0answers
489 views

Setting up Smartermail SMTP Banner for multiple IP / hostnames

I use Smartermail Enterprise 10.7 and I wonder how to set SMTP banner for my server which has 5 different IPs, each has its own PTR point to different domain. what cause the SMTP banner only match ...
0
votes
1answer
1k views

Resolving CloudFlare DNS related mail delivery problems

I recently started using CloudFlare and am having a few teething problems. Our domain is netlanguages.com and while we have a lot of sub-domains listen, we are currently only trialling a few of the ...
1
vote
3answers
3k views

Does MX Records have anything to do with outbound email?

I'm really confused about the MX Records and generally with email. I've set up Haraka SMTP server for outbound email delivery because I need to send sign up validation emails. If I don't want to ...
0
votes
1answer
103 views

SMTP - Routing in RFC 821 and RFC 2821

RFC 821 indicates that the MAIL verb can be given a <forward-path> argument of the form "@ONE,@TWO:JOE@THREE" to indicate intermediate routing hosts (@ONE,@TWO) and the final receiver of the ...
4
votes
5answers
11k views

SMTP Reverse DNS Mismatch

My dedicated server ns382087.ovh.net resolves to 46.105.98.72 and hosts multiple domain with several dedicated IP addresses. Each new IP address is added to /etc/network/interfaces Among them, the ...
0
votes
1answer
85 views

Reverse DNS is finding someone else's domain

When I do a reverse DNS of my IP address I'm finding a different server name? This isn't my domain name. I was testing my mail server and it gave that warning. How do I fix it? $ nslookup Default ...
0
votes
1answer
22 views

rDNS for SMTP server locally with Mail hosted by third party

Ok We have a difference of opinion on something and wanted to get some expert advice. We host our mail with our main domain "OurDomain.net" with a third part mail provider. We have an in house ...
4
votes
1answer
301 views

Does DKIM works with subdomains?

ISP's recommend you segment your marketing and transactional emails by using different IPs. I want to start using DKIM, but since DKIM is a domain based reputation system I wonder if signing with the ...
0
votes
1answer
910 views

Using 1and1.com Servers, SMTP Mail is Limited - Local XAMPP Server Works As Expected

I'm starting to not like 1and1.com that much. I've used them for years, but mainly for simple sites without much need for configuration. I know there are better hosting companies out and I may go ...
0
votes
2answers
76 views

DNS, email and the MX-record (hosting a homepage, not the mail server)

I have the following problem: We are hosting a web site for a customer. So he changed his DNS A record to point to our virtual server. This works fine. Now we created a new domain on our side with a ...
0
votes
1answer
234 views

what is giving me a backwards IP address?

This is the background: http://superuser.com/questions/400298/cause-of-intermittent-smtp-emailing-sending-problems In short Outlook (2007 IIRC) was receiving the wrong IP address for the SMTP server ...
0
votes
2answers
329 views

Media Temple, SPF, and Changing IP Addresses

OK...so I have a hosting account with Media Temple and recently had problems with mail servers marking my sent emails as SPAM. I looked into the issue and read it's a good idea to implement SPF which ...
2
votes
2answers
1k views

Some senders from external domains receiving “User Unknown” Errors

As far as I can tell, this question doesn't already exist here but if it does then I apologize. As of January 1st our company name has changed and, as such, our e-mail addresses have changed. The ...
-1
votes
1answer
637 views

Linux / Debian Setting up a mailserver (DNS records)

I have a server running Debian. I installed iRedMail, but now I want to access the mailserver externally (receive and send mails). I have to set up DNS records for that, but I can't seem to figure it ...
0
votes
1answer
881 views

why is exchange failing outbound smtp test?

I am using https://www.testexchangeconnectivity.com to test outbound smtp connectivity. I am getting this message at the last stage: Attempting to find the SPF record using a DNS TEXT record query. ...
1
vote
2answers
651 views

Why Is There A Delay In The SendMail SMTP Banner Greeting When Primary DNS Server Is Unavailable?

CentOS 5.x / SendMail Hi All, Normally when I connect to my SendMail server, I see the SMTP banner greeting almost instantly. I've noticed though, that when the primary DNS server is unavailable ...
11
votes
4answers
6k views

Do SPF Records For Primary Domain apply to subdomains?

I have a quick question regarding SPF records: Do they need to be present for all subdomains? Lets say that I have a TXT record with SPF info for domain.com Let's also say that I have a seperate ...
0
votes
0answers
1k views

Can't make SMTP work on Windows 2008 R2 in a virtual domain

I am a developer currently struggling with a system administration task so beware of some gaps in my knowledge about things that may seem obvious. I want to enable SMTP on a Windows Server 2008 R2 VM ...
-1
votes
1answer
155 views

Proper way to setup SMTP server and Reverse DNS Records

I have IIS 6 SMTP server running on 2003 box. I am running a webserver (IIS) on the same system. I want the SMTP server to deliver mail for my webserver. I have it working fairly well - my only ...
2
votes
1answer
174 views

What domain should I use for reverse DNS PTR record?

If setting up a mail server. What is the best domain to use for the IP's PTR record? Is it usually better to use "mail.domain.com" or just "domain.com" ? I understand that If the PTR record is set, ...
1
vote
4answers
704 views

Preventing MX record fallback

I have a website, example.com, running on a Windows 2008 server with IIS 7 and the "IIS 6" SMTP service. The website regularly sends out emails to info@example.com. In rare instances, the MX record ...
0
votes
2answers
719 views

DNS, SMTP Problem. Trying to send emails through PHP scripts using Gmail server

I have purchased a dedicated server some days ago and I think I don't have enough knowledge to configure its DNS etc. Well, I'll describe my situation. I have a dedicated server for virtualization, ...
0
votes
2answers
762 views

can't receive external mail

Problem with the exchange 2003 server at our company users can send and receive mail from and to each other. receiving external mail (ex. from hotmail) doesn't work, sending to an external mail addres ...
0
votes
1answer
218 views

Is there an easy way to setup “example.com” MX records?

I'm used to use /etc/hosts to fake "example.com" or other domains to point to my local web servers to make tests. I'm trying to do some filtering tests on a multi-domain postfix and I need to fake ...
3
votes
2answers
2k views

Can't get SmarterMail to work on fresh Windows 2008 server

Really having trouble with this, I've been through all the guides I can find and get stuck, using latest version of Smartermail 8 on Windows 2008 with IIS7.5. I have it setup so I can SEND emails ...
0
votes
1answer
2k views

Postfix reject emails due to reverse DNS lookup failure when manual lookup works fine

I have bumped into the following in my mail.log file: May 20 21:50:46 degas postfix/smtpd[1596]: NOQUEUE: reject: RCPT from unknown[109.170.250.177]: 450 4.7.1 Client host rejected: cannot find your ...
6
votes
2answers
781 views

Can I have an MX record for a 3rd level domain?

I have mail working for continuumconcepts.com right now. My mx records point to my assigned google postini servers. Works great. I have another server out in the wild that is completely disconnected ...
0
votes
1answer
210 views

rDNS mx record problem, smtp test fails

down vote favorite I am doing test at mxtoolbox.com ptr: ip -> mydomain.com mx: mydomain.com ->myip but smtp:173.231.15.144 -> OK - myip resolves to myip.hosted.static.hostingfirm.com / Warning - ...
1
vote
3answers
1k views

SMTP host name vs. domain in “From:” address vis-a-vis Email Deliverability

I'm trying to implement (or make sure that I'm correctly following) email sending best practices to improve deliverability, but the role of the smtp server's host name vs the domain name of the From: ...
1
vote
3answers
731 views

PTR record and dyndns

I have domain name at dyndns.com and set at home smtp server. I try send mail to other servers but get error: 550 We cannot accept email from IP 92.46.76.192 without a DNS PTR record. Contact your ...
2
votes
1answer
778 views

Server has Multiple IPs, IIS SMTP Sends on wrong one?

My Server has 4 IP addresses. (IPs are for example only) 1.2.3.4 1.2.3.5 1.2.3.6 1.2.3.7 Under IIS, I have a Virtual SMTP Server on 1.2.3.5, on port 25. The virtual server installed there at the ...
1
vote
2answers
758 views

How to set PTR record on Windows Server 2008?

I'm having some problems sending out emails from my SMTP Server... apparently I need to setup the PTR record for Reverse-DNS Lookups. I have no clue how to do this. Some instructions point ask to ...
1
vote
2answers
323 views

Suggestions on changing an internet smtp server's ip address

We are moving one of our smtp servers from one hosting provider (A) to another hosting provider (B). Because of this move, the IP address of the server will have to change. Our plan is to do the ...
2
votes
3answers
2k views

SMTP redirecting to other port than 25

How can you redirect your smtp traffic to another port than 25? My ISP blocks incoming traffic to port 25. I've been using ZoneEdit.com for this purpose for years (incoming mail traffic goes to ...
1
vote
1answer
365 views

PTR Record Troubles

I am having a hell of a time getting our PTR record right. Our current PTR zone looks like this: $ttl 38400 @ IN SOA ns1.domain.com. admin.domain.com. ( 1268669139 10800 ...
0
votes
5answers
324 views

Setting up DNS records for a shared host

So I'm setting up this server right now that'll host multiple websites / domains. What are the current best practices with regard to DNS records? I admit to 'just having done something' up to now, ...
1
vote
4answers
1k views

DNS and PTR for SMTP: shared IPs and subdomains

This question is similar to others about PTR and DNS for SMTP, but one specific aspect was unanswered: what if one machine does SMTP and HTTP on the same IP address. For example: SMTP at ...
0
votes
2answers
258 views

MailEnable on server with no DNS

Hi I want to test MailEnable on a vmware server that is not connected to a DNS. I am not allowed to install a dns on the vmware server. Is it possible to test MailEnable in this environment?
0
votes
0answers
663 views

How to send from one mail server to another on the same domain?

This is my first question on ServerFault (although I have had good results with StackOverflow) so if anything is outside the rules or not clear please tell me. I have a website (Joomla) at ...