Is gwu.edu a valid email domain?
Organisation domainChecked 2026-11-06
gwu.edu can receive email. It publishes 10 mail servers, and the first choice is mailprdfbdmz4-mx.es.gwu.edu.
It is not a free provider and is not on our disposable list, so addresses here usually belong to a company, school or other organisation.
SPF is published and ends with ?all. DMARC is set to reject.
Check an email address at gwu.edu
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MX records
| Priority | Mail server | Resolves to |
|---|---|---|
| 10 | mailprdfbdmz4-mx.es.gwu.edu | 128.164.45.28 |
| 10 | mailprdvadmz3-mx.es.gwu.edu | 161.253.166.13 |
| 10 | mailprdfbdmz1-mx.es.gwu.edu | 128.164.45.8 |
| 10 | mailprdfbdmz3-mx.es.gwu.edu | 128.164.45.23 |
| 10 | mailprdfbdmz5-mx.es.gwu.edu | 128.164.45.53 |
| 10 | mailprdfbdmz2-mx.es.gwu.edu | 128.164.45.13 |
| 10 | mailprdvadmz2-mx.es.gwu.edu | 161.253.166.8 |
| 10 | mailprdvadmz5-mx.es.gwu.edu | 161.253.166.37 |
| 10 | mailprdvadmz4-mx.es.gwu.edu | 161.253.166.18 |
| 10 | mailprdvadmz1-mx.es.gwu.edu | 161.253.166.3 |
SPF
Record published
v=spf1 include:_spf.prod.campusgroups.com exists:%{i}._spf.mta.salesforce.com exists:%{i}._spf.sparkpostmail.com include:_spf.google.com include:salsalabs.org include:amazonses.com include:_spf-amer.onbmc.com include:50831232.spf08.hubspotemail.net include:huronclick.com include:email-od.com ip4:104.130.198.37 ip4:104.130.219.135 ip4:104.130.219.250 ip4:104.130.70.233 ip4:104.197.65.145 ip4:108.168.203.23/32 ip4:117.20.43.11/32 ip4:128.164.11.148 ip4:128.164.45.0/24 ip4:13.37.84.251/32 ip4:13.58.175.231/32 ip4:13.58.219.195/32 ip4:135.84.80.0/22 ip4:136.117.59.37 ip4:136.143.160.0/24 ip4:136.143.184.0/24 ip4:136.143.188.0/24 ip4:139.60.0.0/22 ip4:139.60.152.0/22 ip4:147.160.167.0/26 ip4:15.200.201.185 ip4:15.200.21.50 ip4:15.200.44.248 ip4:158.228.129.79 ip4:159.135.235.14 ip4:160.1.62.192 ip4:161.253.145.110 ip4:161.253.145.144 ip4:161.253.150.3 ip4:161.253.166.0/26 ip4:162.247.216.0/22 ip4:165.140.171.0/24 ip4:165.173.128.0/24 ip4:168.245.3.219 ip4:173.203.56.127 ip4:173.203.79.77 ip4:173.203.81.82 ip4:173.203.82.6 ip4:176.31.145.254 ip4:18.136.72.214/32 ip4:18.188.134.198/32 ip4:18.219.6.37/32 ip4:18.223.90.163/31 ip4:198.187.196.100 ip4:198.187.196.130 ip4:198.241.207.0/24 ip4:199.231.134.73 ip4:199.244.78.223 ip4:199.244.78.224 ip4:199.30.234.192/27 ip4:199.30.234.56/29 ip4:199.30.234.64/26 ip4:199.30.235.11/32 ip4:199.67.64.0/24 ip4:206.107.42.249 ip4:206.107.42.254 ip4:207.195.176.0/20 ip4:208.117.49.214 ip4:216.147.212.20/30 ip4:216.235.195.0/24 ip4:216.24.225.0/24 ip4:216.24.226.0/24 ip4:216.248.199.106 ip4:23.21.109.197 ip4:23.21.109.212 ip4:23.21.255.193/32 ip4:23.253.203.171 ip4:23.253.213.135 ip6:2606:69c0:5120:1005::12/64 ip6:2606:69c0:9120:1006::7/64 ip4:3.218.253.173 ip4:3.219.183.2/32 ip4:3.75.117.13/32 ip4:3.87.181.51/32 ip4:3.97.26.246/32 ip4:34.127.23.110 ip4:34.195.3.229/32 ip4:34.198.122.65 ip4:34.208.9.76 ip4:34.210.225.178 ip4:34.211.93.3 ip4:34.212.245.232 ip4:34.217.170.63 ip4:34.217.222.199 ip4:34.218.134.250 ip4:34.218.219.9 ip4:34.237.205.19/32 ip4:34.58.215.46 ip4:34.75.16.178 ip4:34.75.49.213 ip4:34.86.109.48 ip4:35.155.205.36 ip4:35.163.187.232 ip4:35.167.179.172 ip4:35.169.190.25/32 ip4:35.169.198.45/32 ip4:35.177.188.31/32 ip4:35.203.175.213 ip4:35.184.208.151 ip4:35.229.62.77 ip4:35.245.6.248 ip4:35.245.63.129 ip4:37.216.222.128/28 ip4:37.59.202.74 ip4:44.219.181.110/32 ip4:44.234.7.164 ip4:50.112.141.209 ip4:50.16.210.116/32 ip4:50.97.164.168/32 ip4:52.0.20.102 ip4:52.0.90.143/32 ip4:52.11.246.83 ip4:52.12.219.5 ip4:52.13.16.134 ip4:52.2.238.96 ip4:52.20.146.34 ip4:52.203.217.140 ip4:52.222.36.182/32 ip4:52.222.62.51 ip4:52.222.73.120/32 ip4:52.222.73.83 ip4:52.222.75.85 ip4:52.222.89.228 ip4:52.23.73.104/32 ip4:52.25.230.42 ip4:52.26.137.1 ip4:52.26.218.15 ip4:52.26.86.178 ip4:52.27.124.21 ip4:52.38.140.162 ip4:52.39.9.202 ip4:52.40.133.144 ip4:52.41.48.65 ip4:52.43.232.107 ip4:52.43.50.148 ip4:52.6.97.95/32 ip4:52.61.91.9 ip4:52.64.190.42/32 ip4:52.86.188.131 ip4:54.148.17.198 ip4:54.173.229.38 ip4:54.174.116.32 ip4:54.186.193.102/32 ip4:54.187.208.83 ip4:54.189.251.240 ip4:54.190.223.39 ip4:54.191.38.125 ip4:54.236.109.30 ip4:54.236.128.150 ip4:54.69.12.59 ip4:54.69.172.93 ip4:54.69.65.158 ip4:54.69.73.61 ip4:54.87.108.204/32 ip4:64.244.120.32/27 ip4:64.244.122.192/27 ip4:64.69.212.0/24 ip4:64.74.237.230/31 ip4:67.207.158.141 ip4:67.207.158.35 ip4:67.23.31.6 ip4:69.196.241.0/24 ip4:72.50.228.0/24 ip4:74.123.153.0/25 ip4:74.123.154.128/25 ip4:74.200.12.250/30 ip4:74.203.184.208/30 ip4:74.203.184.32/27 ip4:74.203.185.12/32 ip4:94.23.120.168 ip4:98.97.248.0/21 ip4:54.240.121.247 ip4:54.240.121.248 ?allDMARC
Policy: reject
v=DMARC1;p=reject;sp=reject;rua=mailto:dmarc_reports@email.gwu.edu, mailto:dmarc_agg@vali.email;fo=0:1:s:d;ruf=mailto:dmarc_reports@email.gwu.edu
Disposable?
No, not on our disposable list.
Free provider?
No, not a known free provider.
What this means for your email list
What this means for addresses at this domain
Mail routing for gwu.edu is healthy, so the domain is not the risk. The risk is the mailbox: outdated contacts, shared inboxes and catch-all servers. A mailbox-level check tells you which addresses are safe to send to.
Sender authentication
gwu.edu has a strict DMARC policy (reject): mail that fails authentication is refused, which protects its brand from spoofing and means anyone sending as gwu.edu must have SPF and DKIM set up correctly.
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Sign up to get a report summary →Frequently asked questions
- Is gwu.edu a valid email domain?
- Yes. gwu.edu publishes 10 MX records and can receive email. Whether a particular mailbox exists is a separate question that only a mailbox check can answer.
- Is gwu.edu a disposable email domain?
- No. gwu.edu is not on our disposable list. The list is updated regularly, and new throwaway domains appear all the time.
- What are the MX records for gwu.edu?
- mailprdfbdmz4-mx.es.gwu.edu (priority 10); mailprdvadmz3-mx.es.gwu.edu (priority 10); mailprdfbdmz1-mx.es.gwu.edu (priority 10); mailprdfbdmz3-mx.es.gwu.edu (priority 10); mailprdfbdmz5-mx.es.gwu.edu (priority 10); mailprdfbdmz2-mx.es.gwu.edu (priority 10); mailprdvadmz2-mx.es.gwu.edu (priority 10); mailprdvadmz5-mx.es.gwu.edu (priority 10); mailprdvadmz4-mx.es.gwu.edu (priority 10); mailprdvadmz1-mx.es.gwu.edu (priority 10).
- Does gwu.edu have SPF and DMARC?
- SPF: yes, ending ?all. DMARC: yes, policy reject.