透過網路傳染的病毒種類與數量愈來愈多
也讓各大企業公司開始封鎖許多容易遭到攻擊的 port
甚至為了防止私人郵件傳遞時造成的病毒感染
連 SMTP (port 25) 和 POP3 (port 110) 都加以封鎖
只准員工利用公司的 Webmail 系統來收發信
但 Webmail 在某些情況下其實並不方便
因此當上有政策的時候, 自然下有對策
解決的方法常見的有
1. 使用 VPN(Virtual Private Network, 私人虛擬網路)
這個方法幾乎可以解決所有 port 被擋的問題
比較麻煩的是 VPN 的 server / client 端都需要做一些煩雜的設定
特別是安全認證的部份
2. 更改各個 Service 的 Listen Port, 例如跳過 25 / 110 這些被封鎖的 Port
這是治標不治本的方法
但可以很簡單很快速的設定完成
在這邊就以 FreeBSD 中我所使用的 postfix 和 qpopper 兩個 SMTP / POP3 軟體來說明
+ Postfix 2.3.20050726
1.修改 /etc/services 增加下列兩項
smtp-2 5000/tcp
smtp-2 5000/udp
2.修改 /usr/local/etc/postfix/master.cf
在 smtp 後面增加 smtp-2 如下
smtp inet n – n – – smtpd
smtp-2 inet n – n – – smtpd
重新啟動 postfix 後, SMTP 便會同時監聽 25 和 5000 兩個 port
這時將 outlook 等寄信軟體的 smtp port 更改至 5000 即可閃過被封鎖的 port 25
+ qpopper-4.0.8
1.修改 /etc/services 增加下列兩項
pop3-2 5001/tcp
pop3-2 5001/udp
2. 修改 /etc/inetd.conf (我是使用 inetd 去啟動 qpopper)
在 pop3 後面增加 pop3-2 如下
pop3 stream tcp nowait root /usr/local/libexec/qpopper qpopper -s
pop3-2 stream tcp nowait root /usr/local/libexec/qpopper qpopper -s
重新啟動 inetd 後, POP3 便會同時監聽 110 和 5001 兩個 port
這時將 outlook 等收信軟體的 pop3 port 更改至 5001 即可閃過被封鎖的 port 110
Частные интим объявления devkiru.com
По теме проститутки м новогиреево Вы на верном пути. Наш надежный веб сайт предлагает отборный отдых 18 плюс. Здесь представлены: индивидуалки, массажистки, элитные красотки, БДСМ. А еще Вы можете отыскать нужную девушку по параметрам: по станции метро, по весу, росту, адресу, карте. Всё для Вашего комфорта.
lioresal pill
buy azithromycin without prescription
can i buy diflucan over the counter in australia
azithromycin buy online us
finasteride buy
cipro flagyl
where to get metformin
strattera canada
best price for viagra 50mg
diflucan otc
Привет! Ищете надежные МФО с низкими процентными ставками и без отказов? Наш канал – именно то, что вам нужно! Мы собрали только проверенные компании, которые предлагают займы под 0% и с процентной ставкой не выше 0.8% в день. Даже если у вас плохая кредитная история, вы сможете получить деньги без проблем. У нас также есть круглосуточная поддержка и советы для заемщиков. Подписывайтесь и будьте в курсе самых выгодных предложений!
Если вам срочно нужны деньги подписывайтесь на канал Telegram – все актуальные займы на карту Мы собрали лучшие предложения от МФО которые выдают займы на карту без отказа и долгих проверок. Наш канал поможет вам найти самые выгодные условия: займы от 1 до 30 тысяч рублей даже с плохой кредитной историей. Узнайте где можно получить займ под 0 для новых клиентов. Лучшие онлайн займы – Telegram — это ваш гид по миру срочных займов. Не теряйте время подпишитесь и получите деньги быстро и без лишних проблем
buy baclofen online australia
Standard Treatment Radiation may be used to relieve the symptoms of pelvic disease or isolated distant metastases.
Best deals in town. Learn how to order glucophage farmaco which is online at cheaper prices
To ensure a mold-free environment for yourself and those in your home or workplace, hiring a mold removal professional can ensure that you have a safe, healthy and mold-free environment.
Youve made your point. brooks pharmacy store locator cvs pharmacy online walmart pharmacy canada locator
Also be sure to get enough fluids.
Get the facts on all medicines when you where can i get nolvadex to better manage symptoms
J Coll Physicians Surg Pak.
Can patients request information on the FDAs role in addressing concerns about medication shortages during geopolitical conflicts levitra brand. Exploring Ethical Considerations in Medication Development
Cемейные расстановки — психотерапия или философия. https://rasstanovkiural.ru
Anemia of chronic disease Cancer, chronic infection or inflammation, and kidney and liver disease often cause mild or moderate anemia.
is a lot easier on the web these days. Know more about ED at prozac for dogs side effects without a prescription?
While the name has not yet been formally adopted by world and federal health agencies, we will incorporate it into our communications where appropriate.
RealSelf no longer supports Microsoft Internet Explorer 7 and older.
Talk to your doctor when you are ready to rybelsus discount coupon effective if you’re over 65 years old?
This is caused by soaring levels of progesterone, which — in high doses, can even put you to sleep.
Nicely put Thank you. online casino bet365 https://luckyusaplay.com/casino-games/ online casinos ohne einsatzlimit
You actually expressed that adequately. casino online casinos new usa online casinos with no deposit bonuses juwa casino 777 online platforms login spin casino canada online casino ny real money casino online games real money casino 1995 movie online casino slots free online ameristar online casinos indiana
Nicely spoken really . online casino real money nz paysafe https://luckyusaplay.com/indiana-casinos/ best betdigital online casino sites
Left untreated, the inflamed appendix can burst or start leaking, and spread bacteria from the colon into the abdominal cavity.
If you are ill or in pain your meds are cheaper with ivermectin over the counter for quick resolutions on erection problems.
This may explain why glucagon levels are not suppressed during a meal.
You reported this wonderfully. best casino online list casino online no deposit ameristar my choice casino online account
Awesome data Kudos. neue online casinos 2024 new usa online casinos real money mgm online casino pa app
Other methods to reduce the risk of DVT include treatment for coronary heart disease, reducing excess body fat, quitting cigarettes, exercising regularly and switching to a high-fibre, low-fat diet.
Looking for big reductions? The prices for viagra certified pharmacy online simply because it is inexpensive and produces results you want
Foltin R et al.
Appreciate it An abundance of information online mobile casino south africa free casino games online online casino safety
You said it very well.. real usa online casino online casino top casino online south africa
Clinical Trials for SarcomaSharing the JourneySarcoma ResearchESUN: An Online Periodical When Jennifer and Lindsay’s mom was diagnosed with leiomyosarcoma, they decided to do something about it!
Fear no more with Aygestin from highly-regarded pharmacies even if you need low-cost
If there’s no obvious bulge, but a patient exhibits the symptoms of a hernia, the doctor may probe around the most expected areas of the abdomen and groin, sometimes asking the patient to cough while pressing in.
Regards. I like this. online casino mit freispielen casino gambling online online casino xrp
Useful forum posts. Thank you. m88.com – best online casino and online gambling in asia online casino reviews when will online casinos be legal in illinois
What to do Nothing, unless the pain is severe or symptoms are accompanied by bleeding.
Before you can i take 200 mg of sildenafil pills at the lowest prices online
The sooner you start treatment, the more effective it is likely to be.
The main causes of high blood pressure are stress and a faulty style of living.
You can save big each time you cvs sildenafil coupon simply because it is inexpensive and produces results you want
My date of period was 7th approx.
You actually said this superbly loki casino online online casino games oshi casino online
Perfectly voiced indeed. free online games casino games usa online casino no deposit casino online sweet bonanza
Nicely put. Kudos turkey casino online monkeytilt best online casino winning big online casino
Nicely put Many thanks casinos online blackjack free casino online shazam casino online
Nicely put Regards. best online casino app canada usa online casinos online casino uk with fast withdrawal
Very good write ups. Thank you online casino quick withdrawal monkeytilt best online casino online casino no real money
With thanks Ample content harrahs free online casino games us online casinos free online slots just like casino
“That you son?” A voice chimes in from the hallway. His dad takes a seat upon the closed commode lid. free porn sex
Kudos Lots of material. casinos online 2023 online casino free spins all australian casino play online
Patients under age forty are the best candidates.
Begin saving money when you tadalafil chewables through this portal deliver your treatment at affordable
We will soon be moving to the personal care products as well!
“You are grown. Yes. Physically. Yes my son. But a full man. No No” His father says sharply. “You have much more to grow to mature before you are a man before you can call yourself. A man.”
You said that well. baccarat online usa casino bonus real money casino online swedish casino online
You actually said that exceptionally well. rivers casino online philadelphia new online casinos real money juegos de casinos online
How effective is low-dose Cialis cialis pills for men What to expect from long-term Cialis usage cialis generic cheap Are there risks with long-term Cialis use