2
votes
2answers
535 views

Is the 10-DNS-lookup limit in the SPF spec typically enforced?

My understanding is that the SPF spec specifies an email receiver shouldn't have to do more than 10 DNS lookups in order to gather all the allowed IPs for a sender. So if an SPF record has ...
0
votes
1answer
180 views

Exchange How To Deliver Main Mail and Redirected Mail To Mailbox

My client requested an employee's mails to be blind carbon copied to himself. We did it with a simple rule. After that he told me if somebody sends email to both him and his employee, he only receives ...
0
votes
2answers
128 views

DNS Record for Sending Mail Server

Have 3 servers - web server, mail server and outbound-only email server. The outbound-only email server sends transaction based emails on behalf of the web server (password reset, contact us, etc.) ...
1
vote
3answers
199 views

Does using a 'foreign' domain as email sender reduce email reputation?

We want to send emails through our webapp. Users of the app provide their email adresses. In some cases, we want to send transactional email from the webapp, using the current user as a sender. Does ...
4
votes
1answer
6k views

What is preferable, “no-reply@” or “noreply@”? [closed]

Having a service that sends out notifications to users, I'm currently thinking about changing the sender email address from "info@" to something more meaningful. Since a reply never makes sense, I'm ...
1
vote
2answers
199 views

Does return-path email address domain have a deliverability reputation?

Just wondering if I should build my delivery reputation over return-path email address domain (by keeping it same in every campaign delivery) or can I change it regularly? Any thoughts? Thanks
0
votes
1answer
2k views

What software generates the SMTP bounce message “550 Envelope blocked - User Entry”?

I'm troubleshooting an issue where email sent from a specific user is blocked every time to only a specific sender. The NDR generated (from our Exchange server) has the following message: #550 ...
1
vote
2answers
118 views

Is an email whitelist tied to a domain name, or an IP address?

If I move my email server to a different server, and consequently a different IP address, but keep the same domain name, do I lose the work I've done to get whitelisted?
1
vote
1answer
289 views

Mail deliverability rDNS best practice

I have an email server which sends email for multiple websites (different domain names each) the reply-to will correspond to no-reply@website-a.com (or whatever their username/website is) but the ...
1
vote
1answer
97 views

How do delivery receipt in horde works?

I want to send emails (using perl) using postfix MTA with a delivery receipt like horde does. Some have any idea?
1
vote
2answers
379 views

Email deliverability — Whitelist solution or Email delivery service?

our company is encountering the same recurring problem - email deliverability. A lot of our emails are still getting trapped in yahoo and gmail spam filters. We followed yahoo's best practices guide ...
1
vote
3answers
2k views

Is sending email from EC2 / Rackspace Cloud a bad idea?

In this article it mentions that TrendMicro is now treating all emails from Amazon's EC2 as coming from "Dial Up Users": likely to be spam and this is creating severe deliverability issues with their ...
0
votes
1answer
521 views

Sendmail: external alias not receiving relayed mail under certain circumstances

I have set up an alias in /etc/mail/aliases like this: user: xxxx@gmail.com This relay DOES work when I telnet to example.com 25 and send mail to user@example.com (where example.com is my ...
3
votes
5answers
416 views

Email Delivery To University Mail Servers (.edu emails)

I'm running an app at www.universitytutor.com which lets people find tutors. Most of the tutors are college students. We send out a follow up email 2 weeks after someone contacts a tutor to ask how ...
6
votes
5answers
2k views

Getting stats about deliverability from postfix

At work, our CEO is working on a plan to move away from a service provider who do our Spam filtering, etc. Currently, all our mail gets relayed out through this service, and all incoming email gets ...
7
votes
4answers
542 views

Steps to take to improve email deliverability

Successfully delivering email to my clients is a pretty high priority at my company. We are of course fully opt-in, paid clients, no possibility of spam, the whole thing. The information we email is ...