microsoft blocking gophish
…targeting Defender, test your templates through tester mail before sending. some red teamers use self hosted SMTP with Postal or similar for a cleaner reputation…
View original on RedditMost critical first. Last updated 2026-10-19.
…targeting Defender, test your templates through tester mail before sending. some red teamers use self hosted SMTP with Postal or similar for a cleaner reputation…
View original on Reddit…dynamic IP (Cloudflare, etc.) * Host your mailboxes locally * Have your mail server smart relay out to a third-party SMTP service like [SMTP.com](https://SMTP.com), Amazon AWS, etc. They will have solutions that don't require port 25 \*and\* you'll have better deliverability than you can ever…
View original on Reddit…address in the from-line of the composer. Because it is abused for spam. The answer is that easy. I manage an incoming SMTP mail gateway, more than 70% of captured spam originating from free e-mail services such as outlook.com and *in particular* gmail uses such tricks. If you really need such a…
View original on RedditWe don't use either of these company's APIs anymore since we're doing our own outbound SMTP, but we've used both - https://elasticemail.com/email-api-pricing - https://smtp.com We moved from SMTP.com to Elastic because it was considerably less expensive. SMTP.com's TOS is stupid: they require a…
View original on Reddit…SES ($1 per 10,000 emails sent but they will yank you if your bounce or complaint rates are too high), Mailgun, [SMTP.com](https://SMTP.com) or other SMTP-as-a-service solutions. All of them have strong anti-spam policies; message me for details about the companies most likely to be fine…
View original on Reddit…with one of the major bulk mailers and it really hurt my campaign. I use SendBlaster on my computer and then an SMTP server from smtp.com. it's a bit harder than say mailchimp but I have complete control over how it's delivered to my clients. I also can't have my campaign shut off halfway…
View original on RedditNever heard of either of those, popular ones are [smtp.com](http://smtp.com) mailgun, send grid.
View original on Reddit…original thought is that in a reasonable sized production environment, you would probably have a few systems running SMTP.COM and a few running MAILDB.COM, a few running IMAP.COM and a few running NAMED.COM. You might have a few more running SPAMD, more for AV, perhaps some more with your mail…
View original on RedditDon't abuse ProtonMail for spamming. If you want to spam folks, use dedicated spam services - such as sendgrid, mailjet, [smtp.com](https://smtp.com), Sendinblue, etc, etc. There's a ton of these services who does the spamming in the proper ways.
View original on RedditYea we disabled direct send and that broke copiers from being able to scan using [SMTP.com](http://SMTP.com) as the relay. Well the scans are going out but Microsoft it rejecting them. On the brightside, spam has stopped.
View original on Reddit…ANY should work. SHOULD. It doesn't. If you have any protocol mapping turned on that is MAPI or higher in the list, SMTP for example, with nothing else turned on (other than DNS and CIFS), it breaks it. Turn everything off, bar DNS/CFS, it works immediately. Turn on just HTTP with only Port 80?…
View original on Reddit…through. All my ISP reports is that spam came from my gateways IP address and that I should resolve it. I've contacted SMTP.COM to see if it's reasonable to get them to relay any email from the property, but they haven't responded to my 2 inquiries as of yet. Remember: Since my gateway only hands…
View original on RedditI think it could have been from SMTP.com but I don't know how a spoofed mail ended up in my inbox instead of the spam folder and didn't warn me about it not being from the original sender. http://i.imgur.com/Y7w8bJX.png
View original on Reddit"Good ones" these days straddle several ESPs. Send the shit through smtp.com or some other spam cannon..let it all bounce. Send everything else through a reputable ESP. Tons of other tricks and gotchas along the way. Spammers are smart.
View original on RedditSo what I did was exactly what you said - instead of using SMTP.COM option I used the Other SMTP option. I put all the info in, at first it didn't work - the suggested SMTP port was wrong. But I changed it and changed the security info to SSL rather than TLS. That was the final step. I was so glad…
View original on Reddit…moved from spam to inbox, marked as important, etc. Also, warmup quality matters a lot. Engagement from cheap/random SMTP inboxes won’t do much for B2B deliverability. Ideally the warmup network should include real Google Workspace and Microsoft 365/O365 inboxes. So yes to gradual ramp-up, but…
View original on Reddit…for port 443. \-- configured mailcow to send return traffic through wireguard tunnel to avoid being blocked by other SMTP parties for traffic anomalies. I also configured mailcow to send email using my email provider. \- to work around any service disruption (internet down, electricity down, or…
View original on Reddit…just need to send verification/transactional mail rather than run a full mail server, port `587` with authenticated SMTP tends to get approved faster since it's not the thing spammers abuse. Worth asking the provider directly before you sign up rather than finding out…
View original on Reddit…service for the right need. Gmail is not meant to be used for newsletters, same goes for its API. Sendgrid, Mailchimp, SMTP.com, mailgun, etc. are the ones that should handle your mailing’s needs. Any email can end up in the spam folder these days due many many reasons, specially the ones that…
View original on Reddit…is different, has keywords, etc etc. You should try out different things and see what works. I have an account with smtp.com and I usually send in bulk from…
View original on RedditMy recommendation for this is to get a transactional SMTP service from smtp.com or sendgrid.com. They work with all spam filters and such to help provide a much more reliable delivery service. Also prevents your VPS ip from getting blacklisted. That being said things like SPF, PTR and manual…
View original on RedditWe used smtp.com for our self-hosted clients back in the day. It's an inexpensive mail relay service that 1. Solves the "your IP looks scammy, I'm not routing your mail" issues 2. Caches emails if your server is offline for any reason 3. Is cheeap 4. Was crazy reliable
View original on Reddit…to use. Ill move into EC2 regardless as my SaaS grows. DigitalOcean offers very cheap 'droplets' but if you need SMTP traffic for emails its normally blocked on those ports. Not sure if support can unblock them, but you need to use API or a SMTP relay for your email…
View original on Reddit…Get the full `proxyAddresses` list (aka email aliases) for each user. `Enable-RemoteMailbox` only stamps the primary SMTP and remote routing address, so you'll want to feed the rest back in via `Set-RemoteMailbox -EmailAddresses` Also pause AAD Connect (`Set-ADSyncScheduler -SyncCycleEnabled…
View original on Reddit